269 results on '"Kouvaris J"'
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2. Measurement of blood phosphorus: A quick and inexpensive method for detection of the existence of cancer in the body. Too good to be true, or forgotten knowledge of the past?
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Papaloucas, C.D., Papaloucas, M.D., Kouloulias, V., Neanidis, K., Pistevou-Gompaki, K., Kouvaris, J., Zygogianni, A., Mystakidou, K., and Papaloucas, A.C.
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- 2014
- Full Text
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3. Limitations of Quantitative Bone-Mass Measurements Using Assessments of First-Order Statistics of Grey-Level Histograms in Plain Radiographs
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KOULOULIAS, V. E., MATSOPOULOS, G., KOUVARIS, J. R., ANTYPAS, C., UZUNOGLU, N. C., VARELA, M. N., METAFA, A., SANDILOS, P., and VLAHOS, L. J.
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- 2004
4. Impact of Inguinal Dissection on Prognosis of Early-Stage Squamous Cell Carcinoma of the Vulva a Retrospective Analysis
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Kouvaris, J. R., Kouloulias, V. E., Kondi-Pahpiti, A., Kokakis, J. D., and Vlahos, L. J.
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- 2003
5. Cytoprotective Effect of Amifostine in Radiation-Induced Acute Mucositis - a Retrospective Analysis
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Kouvaris, J., Kouloulias, V., Kokakis, J., Matsopoulos, G., Balafouta, M., Miliadou, A., and Vlahos, L.
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- 2002
6. Intraoperative hyperthermia and chemoradiotherapy for inoperable pancreatic carcinoma
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KOULOULIAS, V. E., NIKITA, K. S., KOUVARIS, J. R., GOLEMATIS, B. C., UZUNOGLU, N. K., MYSTAKIDOU, K., and VLAHOS, L. J.
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- 2002
7. A Comment From a Radiotherapeutic Point of View Regarding the ASCO Guidelines on the Role of Bisphosphonates in Breast Cancer
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Kouloulias, V.E., Dardoufas, C., Kouvaris, J., Gennatas, C., and Vlahos, L.
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- 2001
8. Dermal metastasis from vaginal squamous cell carcinoma
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Kouvaris, J. R., Plataniotis, G. A., Sykiotis, C. A., Dapolla, V. J., and Vlahos, L. J.
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- 1999
9. Combined chemoradiotherapy with local microwave hyperthermia for treatment of T3N0 laryngeal carcinoma: a retrospective study with long-term follow-up
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Kouloulias, V., Triantopoulou, S., Vrouvas, J., Gennatas, K., Ouzounoglou, N., Kouvaris, J., Karaiskos, P., Agelakis, P., Antypas, C., Zygogianni, A., Papavasiliou, K., Platoni, K., and Nikolaos Kelekis
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Adult ,Aged, 80 and over ,Toxicity ,Adolescent ,Follow-up ,Radio-chemotherapy ,Chemoradiotherapy ,Hyperthermia, Induced ,Middle Aged ,Young Adult ,Laryngeal cancer ,Humans ,Hyperthermia ,Microwaves ,Laryngeal Neoplasms ,Head and Neck ,Aged ,Follow-Up Studies ,Neoplasm Staging ,Retrospective Studies - Abstract
The purpose of our study was to test the efficacy and toxicity of hyperthermia in conjunction with chemoradiotherapy for T3N0 laryngeal cancer. From 1997-2006, 25 patients diagnosed with T3N0 laryngeal carcinoma who denied laryngectomy were selected for this retrospective study. Patients received a total dose of 70 Gy (2 Gy per fraction, 5 days per week) in combination with 6 weekly sessions of hyperthermia, in addition to weekly cisplatin chemotherapy. The hyperthermia device was operated as a 433 MHz microwave heating with water loaded and water-cooled waveguides. The temperature was monitored subcutaneously in the skin under the aperture of the waveguide. The median follow-up was 60 months, while 23 of 25 patients (92%) presented complete response to treatment. The two patients that did not respond to thermoradiotherapy underwent total laryngectomy, and during follow-up were alive and free of disease. According to EORTC/RTOG criteria, toxicity was mild: three patients (12%) presented grade III, eight (32%) presented grade II and 14 (56%) presented grade I acute skin toxicity. Grade III laryngeal late toxicity (vocal cord malfunction due to severe oedema) was noted in two patients (8%) at 6-8 months post-thermo-chemoradiotherapy. Tmin was correlated (Spearman rho, p0.05) with response to treatment as well as with acute skin toxicity and laryngeal function. When a patient with T3N0 laryngeal carcinoma denies laryngectomy, an alternative treatment is combined thermo-chemoradiotherapy which seems to be effective and generally tolerable with radiation-induced skin toxicity and/or late side effects. A larger patient cohort is needed to confirm these results.Col presente lavoro abbiamo voluto testare l'efficacia e la tossicità del trattamento combinato dei carcinomi laringei T3N0 mediante ipertermia e radio-chemioterapia. Per questo studio retrospettivo abbiamo selezionato 25 pazienti, trattati fra il 1997 e il 2006, ai quali era stato diagnosticato un carcinoma laringeo con stadiazione T3N0, che avevano rifiutato la laringectomia come possibile trattamento. Tutti i pazienti sono stati sottoposti ad una dose di 70 Gy di radioterapia (2Gy per frazione per 5 giorni alla settimana) in combinazione con 6 sessioni di ipertermia a cadenza settimanale. I pazienti sono stati inoltre sottoposti ad un trattamento chemioterapico settimanale con cis-platino. L'ipertemia è stata ottenuta mediante un generatore di microonde a 433 MHz con un sistema direzionale raffreddato ad acqua. La temperatura è stata monitorata a livello sottocutaneo in corrispondenza della porzione terminale del sistema direzionale per le microonde. La mediana del follow-up è stata di 60 mesi, nei quali 23 dei nostri 25 pazienti (92%) ha presentato una remissione completa. Nei due pazienti non responsivi alla termo-radioterapia si è proceduto all'esecuzione di una laringectomia totale, ed in corso di follow-up entrambi sono risultati essere vivi e liberi da malattia. Se valutata secondo i criteri dell'EORTC/RTOG la tossicità rilevata è stata leggera: 3 pazienti (12%) hanno presentato un grado III di tossicità cutanea acuta, otto (32%) un grado II e 14 (56%) un grado I. In due pazienti (8%) è stato registrato, a 6-8 mesi dalla termo-chemioterapia una tossicità laringea ritardata di grado III, con edema severo delle corde vocali. La temperatura minima registrata ha mostrato una correlazione sia con la risposta al trattamento (Spearman rho, p0,05) sia con la tossicità cutanea acuta e la funzione laringea. Nei casi in cui un paziente con un carcinoma T3N0 della laringe rifiuta la laringectomia, la termo-chemioterapia si propone come un alternativa efficace caratterizzata da effetti collaterali tollerabili quali la tossicità cutanea radioindotta o effetti indesiderati tardivi. La conferma dei nostri dati richiede tuttavia l'analisi di una casistica più ampia.
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- 2014
10. A New Questionnaire (QRFPC25) Regarding the Religiosity and Spirituality in People with Life-Threatening Disease: Reliability and Validity in a Population of Cancer Patients Undergoing Radiotherapy
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Kouloulias, V. Kokakis, J. Kelekis, N. Kouvaris, J.
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humanities - Abstract
The development of a questionnaire (QRFPC25) assessing the religiosity of cancer patients. The method used for the questionnaire comprises seven multi-item and three single-item scales formed from a 25-question module. The questionnaire was completed on-site and a week after antineoplastic therapy. The final sample included 156 patients. The main topics of the QRFPC25 are the following: worship, relationship with the divine, spiritual discussion, hope, participation in holly communion, faith, life after death, love, bioethics and global quality of life (QoL). The average time of both times taken to complete the questionnaire was approximately 10 min. All multi-item scales met the minimal standards of reliability (Cronbach’s alpha coefficient ≥.70) before or after treatment. Test–retest reliability in terms of the intraclass correlation coefficient was also satisfactory (p
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- 2017
11. Accelerated Hypofractionated Whole-Breast Irradiation with Concomitant Daily Boost in Early Breast Cancer
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Kyrgias, G. Zygogianni, A. Theodorou, K. Koukourakis, M. Oikonomou, A. Kouvaris, J. Kouloulias, V.
- Abstract
Objectives: The aim of this study is to evaluate the feasibility and the related toxicity of hypofractionated whole-breast irradiation with a concomitant daily boost in early breast cancer women not eligible for accelerated partial-breast irradiation. Methods: Twenty-seven patients received 46 Gy to the whole breast in 20 fractions/4 weeks with 2.3 Gy/fraction plus an additional concomitant daily boost of 0.4 Gy to the tumor bed, giving a total dose of 54 Gy (EQD 2 =60 Gy). The cosmetic outcome was assessed according to the European Organization for Research and Treatment of Cancer and Radiation Therapy Oncology Group grading system. Results: Three months after the end of radiotherapy, 59.2% and 40.7% of patients showed grade 0 skin toxicity and grade 1 skin toxicity, respectively. After 6 months, 70.4% and 29.6% of patients showed grade 0 and grade 1 skin toxicity. After 1 year, grade 0 skin toxicity was found in 77.7% of the patients and grade 1 skin toxicity in 22.2% of the patients. After 18 months, grade 0 skin toxicity was found in 92.6% and grade 1 skin toxicity in 7.4% of the patients. After a median follow-up of 24 months, all patients showed excellent cosmetic results with minimal breast edema and minimal skin changes. There have been no local relapses to date. Conclusion: The accelerated hypofractionated schedule with a concomitant boost appears to be an acceptable alternative to the traditional longer schedule, with low local toxicity and excellent to good short-term cosmetic results, although a much longer follow-up is needed to assess the local control rate. © 2013 Wolters Kluwer Health, Inc. All rights reserved.
- Published
- 2015
12. Is there any potential clinical impact of serum phosphorus and magnesium in patients with lung cancer at first diagnosis? A multi-institutional study
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Kouloulias, V. Tolia, M. Tsoukalas, N. Papaloucas, C. Pistevou-Gombaki, K. Zygogianni, A. Mystakidou, K. Kouvaris, J. Papaloucas, M. Psyrri, A. Kyrgias, G. Gennimata, V. Leventakos, K. Panayiotides, I. Liakouli, Z. Kelekis, N. Papaloucas, A.
- Abstract
Background: The aim of the study was to determine whether the expression of baseline phosphorus (P) and magnesium (Mg) levels were prognostic in terms of stage and overall survival (OS) in newly diagnosed non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC) patients. Materials and Methods: Retrospectively, 130 patients were selected at the time of diagnosis oflung cancer (100 with NSCLC and 30 with SCLC), before the initialization of any chemo-radiotherapy. The median age was 67 (range 29-92). IA, IB, IIA, IIB, IIIA, IIIB and IV stages were present in 3, 4, 19, 6, 25, 8, and 65 patients, respectively. After centrifugation, the levels of serum P and Mg were measured using the nephelometric method/ photometry and evaluated before any type of treatment. Results: Higher than normal levels of P were found in 127/130 patients, while only four patients had elevated Mg serum values. In terms of Spearman test, higher P serum values correlated with either stage (rho=- 0.334, p
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- 2015
13. Theoretical analysis, design and development of a 27-MHz folded loop antenna as a potential applicator in hyperthermia treatment
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Kouloulias, V. Karanasiou, I. Giamalaki, M. Matsopoulos, G. Kouvaris, J. Kelekis, N. Uzunoglu, N.
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fungi - Abstract
Purpose: A hyperthermia system using a folded loop antenna applicator at 27 MHz for soft tissue treatment was investigated both theoretically and experimentally to evaluate its clinical value. Materials and methods: The electromagnetic analysis of a 27-MHz folded loop antenna for use in human tissue was based on a customised software tool and led to the design and development of the proposed hyperthermia system. The system was experimentally validated using specific absorption rate (SAR) distribution estimations through temperature distribution measurements of a muscle tissue phantom after electromagnetic exposure. Various scenarios for optimal antenna positioning were also performed. Results: Comparison of the theoretical and experimental analysis results shows satisfactory agreement. The SAR level of 50% reaches 8 cm depth in the tissue phantom. Thus, based on the maximum observed SAR values that were of the order of 100 W/kg, the antenna specified is suitable for deep tumour heating. Conclusions: Theoretical and experimental SAR distribution results as derived from this study are in agreement. The proposed folded loop antenna seems appropriate for use in hyperthermia treatment, achieving proper planning and local treatment of deeply seated affected areas and lesions. © 2015 Informa UK Ltd. All rights reserved.
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- 2015
14. Measurement of blood phosphorus: A quick and inexpensive method for detection of the existence of cancer in the body. Too good to be true, or forgotten knowledge of the past?
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Papaloucas, C.D. Papaloucas, M.D. Kouloulias, V. Neanidis, K. Pistevou-Gompaki, K. Kouvaris, J. Zygogianni, A. Mystakidou, K. Papaloucas, A.C.
- Abstract
The possible elevation of phosphorous (P) in cancer patients blood serum has been reported in the past. This however seems to have passed unnoticed. One hundred individuals, divided into two groups of fifty each, i.e. cancer patients (group A) and healthy individuals (group B), were included in this retrospective study. The incidence of cancer by site in group A was 24% head and neck, 50% non-small cell lung cancer (SCLC) and 26% cervical cancer. In all cancer patients in group A the serum P was over the normal values, in contrast with the normal values of P measured in group B. The mean value of serum P in group A and B were 7.80 (±2.24) and 3.38 (±0.58), respectively (P
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- 2014
15. Feasibility and radiation induced toxicity regarding the first application of transperineal implementation of biocompatible balloon for high dose radiotherapy in patients with prostate carcinoma
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Kouloulias, V. Kalogeropoulos, T. Platoni, K. Georgakopoulos, J. Matsopoulos, G. Chaldeopoulos, D. Beli, I. Pantelakos, P. Asimakopoulos, C. Kouvaris, J. Kelekis, N.
- Abstract
Objective: To evaluate the feasibility of the transperineal implementation of biocompatible balloon (Prospace) and the acute toxicity of high dose 3DCRT in patients with localized low risk prostate cancer. Materials and methods: Between December 2011 and April 2012, fifteen patients were treated with external 3DCRT consisted of 76-78 Gy in 38-39 daily fractions (2.0 Gy/ fraction). Before 3DCRT, we placed the Prospace though the perineum by a minimally invasive procedure in the intermediate space between the rectum and the prostate. The primary study endpoint was the evaluation of acute toxicity according to the EORTC/RTOG radiation toxicity scale. Erectile function was evaluated with the IIEF-5 questionnaire. Rectosigmoidoscopy was performed at baseline, at the end of 3DCRT and 3 months thereafter in order to assess also the rectal toxicity according to Subjective-RectoSigmoid (S-RS) scale. The evaluation of pain related to Prospace implementation was done with the visual analogue score (VAS).Results: The acute toxicities were as follows: grade I GI toxicity in two patients and for GU toxicity, three patients with grade I of nocturia, four patients with grade I of frequency, two patients with grade I and two patients with grade II of dysouria. The mean score of rectal toxicity according to S-RS score was 1.8(±0.6). The mean VAS score related to Prospace was 1.4(±0.5). Erectile function was unchanged. The Prospace device was found stable in sequential CTs during irradiation.Conclusions: The implementation of PROSPACE was feasible, while the acute radiation toxicity was low and comparable with IMRT techniques. © 2013 Kouloulias et al.; licensee BioMed Central Ltd.
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- 2013
16. Suggestion for a new grading scale for radiation induced pneumonitis based on radiological findings of computerized tomography: Correlation with clinical and radiotherapeutic parameters in lung cancer patients
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Kouloulias, V. Zygogianni, A. Efstathopoulos, E. Victoria, O. Christos, A. Pantelis, K. Koutoulidis, V. Kouvaris, J. Sandilos, P. Varela, M. Aytas, I. Gouliamos, A. Kelekis, N.
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Background: The objective of this research is the computed axial tomography (CT) imaging grading of radiation induced pneumonitis (RP) and its correlation with clinical and radiotherapeutic parameters. Materials and Methods: The chest CT films of 20 patients with non-small cell lung cancer who have undergone threedimensional conformal radiation therapy were reviewed. The proposed CT grading of RP is supported on solely radiological diagnosis criteria and distinguishes five grades. The manifestation of RP was also correlated with any positive pre-existing chronic obstructive pulmonary disease (COPD) history, smoking history, the FEV1 value, and the dosimetric variable V20. Results: The CT grading of RP was as follows: 3 patients (15%) presented with ground glass opacity (grade 1), 9 patients (45%) were classified as grade 2, 7 patients (35%) presented with focal consolidation, with or without elements of fibrosis (grade 3), and only one patient (5%) presented with opacity with accompanying atelectasis and loss of pulmonary volume (grade 4). Both univariate and multivariate analysis revealed as prognostic factors for the radiological grading of RP the reduction of FEV1 and the V20 (P=0.026 and P=0.003, respectively). There was also a significant (P
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- 2013
17. Comparison of two radiotherapeutic hypofractionated schedules in the application of tumor bed boost
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Zygogianni, A. Kouloulias, V. Kyrgias, G. Armpilia, C. Antypas, C. Theodorou, K. Kouvaris, J.
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The application of the tumor bed boost by using 2 different hypofractionated planning techniques permit more efficient use of resources in hospitals. The evaluation of the radiation toxicity and the efficacy of the 2 schedules were well tolerated and effective. However, the sequential boost appears superior to the concomitant boost in terms of skin toxicity. Aim: Evaluation of related radiation toxicity and efficacy in terms of local control of 2 radiotherapeutic hypofractionated schedules in the application of tumor bed boost by using 2 different planning techniques. Method: Eighty-one patients with stage I-II disease were retrospectively selected with either concomitant (group A) or sequential (group B) boost for the tumor bed. In group A, 27 patients were treated with a total dose of 46 Gy to the whole breast and 54 Gy to the tumor bed in 20 concomitant fractions. In group B, 54 patients were treated with a total dose of 42.4 Gy in 16 fractions to the whole breast and 53 Gy to the tumor bed by 4 sequential fractions. The boost was administered with multiple photon-beam fields. The median follow-up time was 24 months. Results: The statistical analysis for the 2 groups of the study showed that skin toxicity was significantly worse in group A (P
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- 2013
18. Male breast carcinoma: Epidemiology, risk factors and current therapeutic approaches
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Zygogianni, A.G. Kyrgias, G. Gennatas, C. Ilknur, A. Armonis, V. Tolia, M. Papaloukas, C. Pistevou, G. Kouvaris, J. Kouloulias, V.
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skin and connective tissue diseases - Abstract
Male breast cancer is a very rare disease with an incidence of about 0.5-1% comparing with the one of female breast cancer but relatively little is known about its cause. Treatment strategies for breast cancer in males are derived from studies performed among females. The probable reasons behind the frequent, late diagnoses presented at stages III or IV might be the lack of awareness. The rarity of the disease precludes large prospective randomized clinical trials. This study reviews male breast cancer and its risk factors, recommendations for diagnosis and the management of patients with male breast cancer.
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- 2012
19. Melanoma: The Radiotherapeutic point of view; review of the current literature
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Zygogianni, A. Kyrgias, G. Kouvaris, J. Mystakidou, K. Gogas, H. Kouloulias, V.
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Surgery remains the mainstay of melanoma therapy at all sites. Melanoma is widely believed to be a radioresistant tumor, a misconception that has historically led to the limited use of RT for its treatment. We searched pubmed from 1978 until 2010 by means of prospective randomized trials. The aim was to assess the potential impact of radiotherapy (RT) on local control, quality of life and overall survival. Radiotherapy should be considered in lentigo maligna, especially in elderly patients with extensive or unresectable disease in difficult areas on the face, with adequate tumor control with good cosmetic and functional results. In addition, radiation therapy provides effective palliation in patients with metastatic malignant melanoma. Doses up to 30 Gy or BED > 39.0Gy were found to be associated with prolonged palliation. These findings should be viewed with caution because the lack of data regarding performance status as well as other unknown confounding factors limits the applicability of retrospectives studies. We recommend that higher doses of RT be considered when using RT for the palliation of patients with metastatic melanoma and a performance status that could tolerate such therapy. In the futute, the combination of radiation therapy with hyperthermia may be a reasonable therapeutic option. © 2011 Bentham Science Publishers Ltd.
- Published
- 2011
20. Oral mucositis, pain and xerostomia in 135 head and neck cancer patients receiving radiotherapy with or without chemotherapy
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Nicolatou-Galitis, O. Kouloulias, V. Sotiropoulou-Lountou, A. Dardoufas, K. Polychronopoulou, A. Athanassiadou, P. Kolitsi, G. Kouvaris, J.
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Goal of work: This study compared the severity of oral mucositis, pain and xerostomia during and at the completion of radiotherapy in head and neck cancer patients who had received antifungal and antiviral treatment. Patients: The study included 135 patients. Mean total radiotherapy dose was 62.4 Gray. Chemotherapy was administered to 47% of patients. Methods: Oral mucositis was scored weekly, while patients self-evaluated their pain and xerostomia. Cytology smears for the assessment of herpetic infection complicating the ulcers of mucositis were taken from 46 patients. Systemic antifungals and antivirals were administered during radiotherapy, upon clinical, presumptive diagnosis of candidiasis and herpetic infection. Antifungals and antivirals were continued to the end of radiotherapy. Results: Radiotherapy was completed within the preplanned time in 117 patients (87%). During radiotherapy, the prevalence of severe mucositis, pain and xerostomia was 57%, 43% and 29% respectively, and was significantly reduced to 33%, (P
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- 2011
21. A review on radiotherapy hypofractionation schedules for breast cancer treatment
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Armpilia, C. Antypas, C. Zygogianni, A. Balafouta, M. Sandilos, P. Kouvaris, J.
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Radiation therapy is an integral part of management in breast carcinoma treatment. Standard curative schedules of radiotherapy to the breast deliver 25 fractions of 2.0 Gy per day over 5-6 weeks. Considerable recent literature suggests that hypo-fractionation may be advisory in breast cancer. The use of fewer fractions of more than 2 Gy per day (hypo-fractionation) is based on data suggesting that breast carcinoma is more sensitive to fraction size than squamous carcinomas and therefore could have similar fractionation sensitivity to the dose-limiting healthy tissues, including skin, subcutaneous tissues, muscle and ribs. In this article, a review of published studies and currently ongoing trials, which may provide evidence for the use of hypo-fractionated radiotherapy in breast cancer patients, is presented. Also, for all these different hypo-fractionation regimens found in literature, biologically effective dose (BED) values are calculated and compared. Data from studies and randomised trials seem to support the concept that modest hypo-fractionation can be used to treat the whole breast after breast-conserving surgery with similar rates of local control and radiation morbidity as seen with conventional fractionation. © Copyright Cambridge University Press 2011.
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- 2011
22. PRELIMINARY RESULTS ON THE IMPACT OF HYPOFRACTIONATED RADIOTHERAPY IN CARDIAC TOXICITY(CARDIAC FUNCTION) IN EARLY STAGED LEFT SIDED BREAST CANCER PATIENTS: A PROSPECTIVE RANDOMIZED PHASE II STUDY
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Fragkandrea-Nixon, I. Kouloulias, V. Mpaziotis, N. Mpetsou, S. Sotiropoulou-Lontou, A. Gouliamos, A. Kouvaris, J.
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- 2011
23. Oral squamous cell cancer: Early detection and the role of alcohol and smoking
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Zygogianni, A.G. Kyrgias, G. Karakitsos, P. Psyrri, A. Kouvaris, J. Kelekis, N. Kouloulias, V.
- Abstract
Objective. Oral squamous cell carcinoma has a remarkable incidence worldwide and a fairly onerous prognosis, encouraging further research on factors that might modify disease outcome. Data sources. A web-based search for all types of articles published was initiated using Medline/Pub Med, with the key words such as oral cancer, alcohol consumption, genetic polymorphisms, tobacco smoking and prevention. The search was restricted to articles published in English, with no publication date restriction (last update 2010). Review Methods. In this review article, we approach the factors for a cytologic diagnosis during OSCC development and the markers used in modern diagnostic technologies as well. We also reviewed available studies of the combined effects of alcohol drinking and genetic polymorphisms on alcohol-related cancer risk. Results. The interaction of smoking and alcohol significantly increases the risk for aero-digestive cancers. The interaction between smoking and alcohol consumption seems to be responsible for a significant amount of disease. Conclusion. Published scientific data show promising pathways for the future development of more effective prognosis. There is a clear need for new prognostic indicators, which could be used in diagnostics and, therefore a better selection of the most effective treatment can be achieved. © 2011 Zygogianni et al; licensee BioMed Central Ltd.
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- 2011
24. Comparison of three-dimensional conformal irradiation techniques for prostate cancer using a low-energy (6 MV) photon beam
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Armpilia, C. Antypas, C. Zygogianni, A. Balafouta, M. Kouvaris, J. Sandilos, P.
- Abstract
Purpose: To evaluate composite coplanar and non-coplanar three-dimensional conformal techniques (3D-CRT) for external-beam prostate radiotherapy using a low-energy (6 MV) photon beam. Methods and Materials: For treatment-planning purposes, three different planning target volumes (PTV) were defined for ten patients with prostate cancer and as follows: PTV1 (pelvis), PTV2 (prostate + seminal vesicles + 1 cm margin) and PTV3 (prostate + 1 cm margin). Conformal techniques of 2, 3, 4, 5 (coplanar) and 6 (non-coplanar) field techniques have been considered and combined to produce five different plan combinations (i.e. techniques A, B, C, D and E). Treatment plans were generated with a prescription dose of 75 Gy to PTV3, 65 Gy to PTV2 and 45 Gy to PTV1 and were assessed on the basis of 3D dose distributions and dose-volume histograms (DVHs). Normal tissue-dose constraints for the relevant organs at risk (OARs), that is, rectum, bladder and femoral heads, were also considered. Results: Findings show that all five treatment-plan combinations result in adequate PTV coverage and acceptable OAR irradiated volumes. The greatest rectal spacing in the high-dose region is achieved by technique C; all techniques achieve this, except for technique A, and give approximately the same fraction of volume (of rectum) that receives a dose of 50 Gy (V50) and 60 Gy (V60). When considering the bladder, techniques B, D and E give the best bladder sparing with small absolute differences, whereas technique A results in the lowest dose for femoral heads. Technique E appears to give the best compromise for all three considered OARs, provided the PTV is adequately covered. Conclusions: Even though the optimum photon-beam energy for conformal prostate radiotherapy is greater than 10 MV, our study shows that a good sparing of OAR can be achieved even with a lower-energy beam (6 MV) and the appropriate plan combination and that the dose to prostate can be as high as 75 Gy. © 2010 Cambridge University Press.
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- 2011
25. Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development
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Kouloulias, V. Karanasiou, I. Koutsoupidou, M. Matsopoulos, G. Kouvaris, J. Uzunoglu, N. and Kouloulias, V. Karanasiou, I. Koutsoupidou, M. Matsopoulos, G. Kouvaris, J. Uzunoglu, N.
- Abstract
Background. Deep heating is still the main subject for research in hyperthermia treatment. Aim. The purpose of this study was to develop and analyze a simple loop as a heating applicator. Methods. The performance of two 27 MHz inductive loop antennas as potential applicators in hyperthermia treatment was studied theoretically as well as experimentally in phantoms. Two inductive loop antennas with radii 7 cm and 9 cm were designed, simulated, and constructed. The theoretical analysis was performed by using Green's function and Bessel's function technique. Experiments were performed with phantoms radiated by the aforementioned loop antennas. Results. The specific absorption rate (SAR) distributions were estimated from the respective local phantom temperature measurements. Comparisons of the theoretical, simulation, and experimental studies showed satisfying agreement. The penetration depth was measured theoretically and experimentally in the range of 2-3.5 cm. Conclusion. The theoretical and experimental analysis showed that current loops are efficient in the case where the peripheral heating of spherical tumor formation located at 2-3.5 cm depth is required. © 2015 Vassilis Kouloulias et al.
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- 2015
26. Accelerated hypofractionated radiotherapy schedules in breast cancer: A review of the current literature
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Kalogeridi, M.A. Kelekis, N. Kouvaris, J. Platoni, K. Kyrias, G. Pectasides, D. Kouloulias, V.
- Abstract
Lumpectomy followed by breast irradiation is an alternative to mastectomy for patients with early-stage breast cancer. The purpose of radiation treatment following lumpectomy is to minimize the risk of recurrent cancer in the treated breast with as little toxicity as possible so that good cosmesis and function are maintained. Conventional fractionation schedules for postlumpectomy radiotherapy give 50 Gy in 2 Gy daily fractions, often with an additional boost to the tumor bed, resulting in treatment being given over 5-7 weeks. Delivering postoperative radiotherapy in a shorter period of time, provided it is as effective as longer treatment regiments, could result in greater convenience for patients. Moreover, given the high incidence of breast cancer, the use of a shorter fractionation schedule would decrease waiting lists in busy radiotherapy departments. We searched the medline (pubmed) and we reviewed all the relevant publications. We concluded that the accelerated hypofractionated schedules are safe in terms of cosmesis and effective in terms of local control. © 2009 Bentham Science Publishers Ltd.
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- 2009
27. Long-term results of LINAC-based stereotactic radiosurgery for acoustic neuroma: The Greek experience
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Kalogeridi, M.-A. Georgolopoulou, P. Kouloulias, V. Kouvaris, J. Pissakas, G.
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otorhinolaryngologic diseases - Abstract
Purpose: To estimate the value of LINAC-based stereotactic radiosurgery (SRS) for the long-term local control of unilateral acoustic neuromas. Materials and Methods: Twenty patients (median age 66; range 57-80 years) with unilateral acoustic neuroma underwent LINAC-based SRS from May 2000 through June 2004 with a dose of 11-12 Gy. The follow-up period ranged from 36 to 84 months (median follow-up period: 55 months). Before SRS none of the patients had useful hearing. The follow-up consisted of repeat imaging studies and clinical examination for assessment of facial and trigeminal nerve function at 6-month intervals for the first year and yearly thereafter. Results: Eleven tumors (58%) decreased in size and eight (42%) remained stable. One tumor showed a minor increase in size on the MRI done 6 months after SRS in comparison with the pretreatment MRI; however, a subsequent decrease was noticed on the next radiographic assessment and the tumor remained stable from then on. None of the tumors increased in size in the long-term follow-up, thus giving an overall growth control of 100% for the patients in this study. None of the patients had useful hearing before SRS, so hearing level was not assessed during follow-up. No patient developed new, permanent facial or trigeminal neuropathy. Conclusion: LINAC-based SRS with 11-12 Gy provides excellent tumor control in acoustic neuroma and has low toxicity even after long-term follow-up.
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- 2009
28. Temozolomide with radiation therapy in high grade brain gliomas: Pharmaceuticals considerations and efficacy; a review article
- Author
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Koukourakis, G.V. Kouloulias, V. Zacharias, G. Papadimitriou, C. Pantelakos, P. Maravelis, G. Fotineas, A. Beli, I. Chaldeopoulos, D. Kouvaris, J.
- Abstract
Malignant gliomas (glioblastoma multiforme and anaplastic astrocytoma) which have a combined incidence of 5-8/100,000 population, represent the most common primary central nervous system tumors. The treatment outcomes even with aggressive approach including surgery, radiaton therapy and chemotherapy are dismal with median reported survival is less than 1 year. Temozolomide is a new drug which has shown promise in treating malignant gliomas and other difficult-to-treat tumors. This drug is a per os (p.o) imidazotetrazine second-generation alkylating agent which represents the leading compound in a new class of chemotherapeutic agents that enter the cerebrospinal fluid and do not require hepatic metabolism for activation. The efficacy of temozolomide was tested in vitro studies and has demonstrated schedule-dependent antitumor activity against highly resistant malignancies, including high-grade glioma (HGG). In addition, in clinical studies, temozolomide consistently demonstrates reproducible linear pharmacokinetics with approximately 100% p.o. bioavailability, noncumulative minimal myelosuppression that is rapidly reversible, and activity against a variety of solid tumors in both children and adults. Moreover, preclinical studies have evaluated the combination of temozolomide with other alkylating agents and inhibitors of the DNA repair protein O6-alkylguanine alkyltransferase to overcome resistance to chemotherapy in malignant glioma and malignant metastatic melanoma. At the present time temozolomide is approved in the United States for the treatment of adult patients with refractory anaplastic astrocytoma and, in the European Union, for treatment of glioblastoma multiforme showing progression or recurrence after standard therapy. Temozolomide's characteristics which make it a candidate for a wide range of clinical testing to evaluate the potential of combination treatments in different tumor types are its predictable bioavailability and minimal toxicity. An overview of the mechanism of action of temozolomide and a summary of results from more important randomized controlled clinical trials in high grade gliomas are presented here. © 2009 by the authors.
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- 2009
29. Apoptotic and inflammation markers in oral mucositis in head and neck cancer patients receiving radiotherapy: Preliminary report
- Author
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Xanthinaki, A. Nicolatou-Galitis, O. Athanassiadou, P. Gonidi, M. Kouloulias, V. Sotiropoulou-Lontou, A. Pissakas, G. Kyprianou, K. Kouvaris, J. Patsouris, E.
- Abstract
Goal of work: The aim of this study was to investigate the expression of pro-apoptotic protein p53 and anti-apoptotic proteins BCl-2 and MCl-1, as well as the expression of pro-inflammatory cytokines tumor necrosis factor (TNF) and interleukin-1beta (IL-1β) in patients developing mucositis during radiotherapy for head and neck cancer. Materials and methods: Thirty-five patients receiving radiotherapy for head/neck cancer were included in this study. Patients were examined before radiotherapy. Oral mucositis was recorded weekly during radiotherapy. Cytologic smears from the oral cavity were taken with a brush. Immunocytochemical staining was performed by the use of p53, BCl-2, MCl-1 TNF and IL-1β monoclonal antibodies. Main results: P53 was expressed in 1 of 15 smears before the initiation of radiotherapy (6.5%) compared to 3 of 7 smears from patients with grade III mucositis (43%) during radiotherapy. BCl-2 was expressed in 15 of 15 smears before radiotherapy (100%) and in three of seven patients with grade III mucositis (43%) during radiotherapy. MCl-1 was expressed in 10 of 14 samples before radiotherapy (71.5%) and in two of seven patients with grade III (28.5%) mucositis during radiotherapy. TNF was expressed in 9 of 14 patients before radiotherapy (64%) and in six of seven patients with grade III mucositis during radiotherapy (86%). IL-1β was detected in 7 of 14 patients before radiotherapy (50%) compared to 6 of 7 patients with grade III mucositis during radiotherapy (86%). Conclusion: Our preliminary results indicate an induction of apoptosis and inflammation in the oral mucosa in patients developing mucositis during radiotherapy for head/neck cancer. © 2007 Springer-Verlag.
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- 2008
30. Granulosa cell tumor of the ovary: Tumor review
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Koukourakis, G.V. Kouloulias, V.E. Koukourakis, M.J. Zacharias, G.A. Papadimitriou, C. Mystakidou, K. Pistevou-Gompaki, K. Kouvaris, J. Gouliamos, A.
- Abstract
Granulosa cell tumors of the ovary are rare neoplasms that originate from sex-cord stromal cells. The long natural history of granulosa cell tumors and their tendency to recur years after the initial diagnosis are the most prominent of their characteristics. The secretion of estradiol is the reason for signs at presentation such as vaginal bleeding and precocious puberty. Abdominal pain and hemoperitoneum, which occasionally can occur, are attributable to tumor rupture. The most common finding in pelvic examination is a tumor mass, which is subsequently confirmed with imaging techniques. Surgery is the mainstay of initial management for histological diagnosis, appropriate staging, and debulking. A more conservative unilateral salpingo-oophorectomy is indicated in patients with stage I disease and patients of reproductive age. Total abdominal hysterectomy with bilateral salpingo-oophorectomy is the appropriate surgical treatment for postmenopausal women and those with more advanced disease. The stage of disease is the most important prognostic factor associated with the risk of relapse. There are no clear conclusions regarding the role of postoperative chemotherapy or radiotherapy in stage I disease and in those with completely resected tumor. The use of adjuvant chemotherapy or radiotherapy has sometimes been associated with prolonged disease-free survival and possibly overall survival. Chemotherapy is the treatment of choice for patients with advanced, recurrent, or metastatic disease, and BEP (bleomycin, etoposide, and cisplatin) is the preferred regimen. Although the overall rate of response to treatment is high, the impact of treatment on disease-free or overall survival is unknown. Prolonged surveillance is mandatory because tumors tend to recur years after the initial diagnosis. © 2008 Sage Publications.
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- 2008
31. Comparison of transdermal fentanyl with codeine/paracetamol, in combination with radiotherapy, for the management of metastatic bone pain
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Kouloulias, Lambros Vlahos, Kyriaki Mystakidou, Emmanuela Katsouda, Marinos L. Tsiatas, and Kouvaris J
- Subjects
Adult ,Male ,Constipation ,Palliative care ,Side effect ,Nausea ,Pain ,Bone Neoplasms ,Administration, Cutaneous ,Fentanyl ,law.invention ,Quality of life ,Randomized controlled trial ,law ,medicine ,Humans ,Pharmacology (medical) ,Acetaminophen ,Aged ,Aged, 80 and over ,Analgesics ,business.industry ,Codeine ,General Medicine ,Middle Aged ,Combined Modality Therapy ,Drug Combinations ,Anesthesiology and Pain Medicine ,Anesthesia ,Quality of Life ,Drug Therapy, Combination ,Female ,medicine.symptom ,business ,medicine.drug - Abstract
Radiotherapy (R/T) is frequently used for palliative treatment of painful bone metastases; however, complete alleviation of pain is not always achieved. This study was designed to evaluate pain management outcomes and quality of life (QoL) measures in cancer patients with metastatic bone pain receiving a combination of R/T and either transdermal therapeutic fentanyl (TTS-F) patches or codeine/paracetamol.A total of 460 palliative care patients with bone metastases who received R/T were enrolled in this prospective, open-label study. The patients were randomized to initially receive a total dose of 120 mg codeine/paracetamol per day or TTS-F patches releasing 25 μg fentanyl per hour. Pain measures were assessed on the basis of selected questions from the Greek-Brief Pain Inventory. Overall treatment satisfaction (scale, 1 to 4), QoL, and European Collaborative Oncology Group status were also recorded.Among the 460 patients, 422 were eligible for evaluation. Pain measures in the TTS-F group demonstrated statistically significant improvements during the study that were superior to those in the codeine/paracetamol group (p < 0.05). Likewise, there was a significantly greater increase (p < 0.05) in the mean satisfaction score for patients in TTS-F group at every visit between baseline and month two. The vast majority (95.8 percent) of patients in the codeine/paracetamol group increased their medication dosage until the end of the study, whereas in the TTS-F group the respective percentage was only 6.1. Both treatments were generally well tolerated, with constipation as the most common side effect followed by sleep disturbances and nausea. The overall frequencies of side effects were higher in the codeine/paracetamol group.The results therefore indicate that TTS-F offers more effective pain relief than codeine/paracetamol, in combination with R/T, in patients with metastatic bone pain, obtaining complete treatment satisfaction matched by improvements in their QoL.
- Published
- 2007
32. Effect of fluconazole antifungal prophylaxis on oral mucositis in head and neck cancer patients receiving radiotherapy
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Nicolatou-Galitis, O Velegraki, A Sotiropoulou-Lontou, A and Dardoufas, K Kouloulias, V Kyprianou, K Kolitsi, G and Skarleas, C Pissakas, G Papanicolaou, VS Kouvaris, J
- Abstract
Goal of work: The aim of the study is to evaluate the effect of fluconazole antifungal prophylaxis on the severity of mucositis in head and neck cancer patients receiving radiotherapy. Patients and methods: Sixty-three patients, with malignant head and neck tumor, eligible to receive radiotherapy, entered the study. Thirty-four patients (group A) received 100 mg/day of fluconazole prophylaxis during radiotherapy and were compared with 29 patients, who received radiotherapy alone (group B). The two groups were similar in terms of patients and radiotherapy characteristics. Smear to test for Candida carriage was taken before and after radiotherapy. Oral candidiasis was diagnosed using the criteria described before. Oral mucositis was recorded according to EORTC/RTOG criteria. Main results: A significant reduction of severe mucositis at the end of radiotherapy (14.7 vs 44.8%, p=0.018) and of interruptions (0 vs 17.2%, p=0.017) was observed in group A. Candidiasis was prevented (0 vs 34.5%, p=0.001), with a significant reduction of Candida carriage of 40.7% (p=0.001). Conclusion: Fluconazole prophylaxis showed a significant beneficial impact on the severity of mucositis and on radiotherapy interruptions in this group of patients. The current study provides data on the build of a randomized controlled trial on the effect of fluconazole prophylaxis on treatment schedule and quality of life of the patients during head and neck radiotherapy.
- Published
- 2006
33. Prevention of acute radiation-induced rectal toxicity by amifostine: Efficacy and evaluation of objective and subjective endpoints for radiation therapy-induced mucositis
- Author
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Kouloulias, V. Kouvaris, J. Mystakidou, K. Kelekis, N.
- Abstract
Often the rectum is a dose-limiting organ in curative radiation therapy of pelvic malignancies. It results in serous, mucoid, or more rarely bloody diarrhea. There are few reports on the cytoprotective effect of amifostine in the radioprotection against rectal mucositis. Among 10 studies published in Medline, significant (P < 0.05) grade I-III acute toxicity was reported, and amifostine was used before irradiation in pelvic areas. Although the strength of the evidence is variable, it seems that there is a radioprotective effect, especially with intrarectal administration of amifostine. The cytoprotection seems to be effective in terms of symptomatic and objective (rectosigmoidoscopy) endpoints. However, there is a need for well designed clinical trials with sufficient numbers of participants. Besides, there is a need for accurate endpoints for evaluating acute rectal radiation toxicity. The rectosigmoidoscopy with objective measurements is superior to subjective parameters such as World Health Organization or Radiation Therapy Oncology Group/European Organization for Research and Treatment of Cancer toxicity grading scales. We propose a system of combining the objective rectosigmoidoscopy with subjective World Health Organization or Radiation Therapy Oncology Group/European Organization for Research and Treatment of Cancer toxicity scales for grading radiation therapy-induced acute rectal toxicity. This system could be accurate and user-friendly with good clinical reliability and validity.
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- 2006
34. Herpes simplex virus-1 (HSV-1) infection in radiation-induced oral mucositis
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Nicolatou-Galitis, O Athanassiadou, P Kouloulias, V and Sotiropoulou-Lontou, A Dardoufas, K Polychronopoulou, A and Gonidi, M Kyprianou, K Kolitsi, G Skarleas, C Pissakas, G Papanikolaou, IS Kouvaris, J
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viruses - Abstract
Goal of work: The aim of the study was to investigate the incidence of herpes simplex virus-1 (HSV-1) infection in mucositis during head and neck cancer radiotherapy. Patients and methods: Sixty patients with malignant head and neck tumor, eligible to receive radiotherapy, who were referred to the Dental Oncology Unit, entered the study. Sixteen patients (26.6%) received concomitant chemotherapy. Mucositis was recorded weekly. Smears taken from the ulcers of mucositis grade 2, or 3, or 4 were stained with Papanicolaou and alkaline phosphatase/antialkaline phosphatase immunocytochemical method to identify HSV-1. Main results: Forty-eight of all 60 patients developed ulcerative mucositis. Smear was available from 29 of 48 patients with ulcerations. HSV-1 infection was identified in 14 of 29 smears available (48.2%). Mucositis healed or was reduced after 1 week of antiviral treatment in 11 of those 14 HSV-1-positive patients; 3 patients responded to 1 g/day of valacyclovir, 7-2 g/day, and 1 patient responded to i.v. acyclovir. Ulcerations recurred after quitting antivirals. Three patients did not respond to 1 g/day of valacyclovir. No HSV-1-negative patient responded to acyclovir (P=0.000). Conclusion: HSV-1 was isolated from 14 of 29 available smears taken from 48 patients with ulcerative mucositis. The incidence of HSV-1 infection during radiotherapy was estimated as being 14 of all 48 patients at risk (29.1%). Healing or reduction in the grade of mucositis after antivirals in HSV-1 positive patients, combined with the negative response to antivirals in HSV-1 negative patients, denoted that HSV-1 infection was a component of ulcerative radiation mucositis in those HSV-1-positive patients.
- Published
- 2006
35. Technique charts for Kodak EC-L film screen system for portal localization in a 6MV X-ray beam
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Sandilos, P. Antypas, C. Paraskevopoulou, C. Kouvaris, J. Vlachos, L.
- Abstract
Port films are used in radiotherapy for visual evaluation of the radiation fields and subsequent quantitative analysis. Common port films suffer from poor image quality compared to the simulator-diagnostic films and is desirable to determine the appropriate exposure required for the best image contrast. The aim of this work is to generate technique charts for the Kodak EC-L film screen system for use in a 6MV x-ray beam. Three homogeneous water phantoms were used to simulate head-neck, thorax and abdomen dimensions of adult human, correspondingly. The film screen system was calibrated in a 6MV x-ray beam and under various irradiation conditions. The film screen system behavior was studied as a function of phantom thickness, field size and air gap between the phantom and the film screen system. In each case the optimum film exposure which produces the maximum image contrast was determined. The generated technique charts for the EC-L film screen system and for a 6 MV x-ray beam are used in our radiotherapy department for daily quality assurance of the radiotherapy procedure. © 2006 - IOS Press and the authors. All rights reserved.
- Published
- 2006
36. Silent radiological imaging time in patients with brain metastasis
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Mystakidou, K Boviatsis, EJ Kouyialis, AT Voumvourakis, K and Kouloulias, V Kouvaris, J Vlahos, L
- Abstract
Cerebral metastasis is a common finding in patients with systemic carcinoma and is an indication for progress of the disease. When brain metastases occur, they lead to a considerable decrease in both survival and the quality of life, in patients who otherwise might be functional. Furthermore, the location, size and number of such lesions, play a decisive role in management and prognosis. Even though early diagnosis and treatment is curative in rare cases, it may lead to a useful remission of the central nervous system (CNS) symptoms, enhance the patient’s quality of life and prolong survival. The radiological exams established in the diagnosis of this condition, include computed tomography (CT) scan or magnetic resonance imaging (MRI). In cases of “micrometastatic” disease though, these exams may be pronounced as normal. This retrospective study was performed in patients with advanced systemic disease, who presented with neurological findings of intracranial mass lesion, in the absence of radiological evidence. Early-occurring symptoms were evaluated in accordance to location of the primary disease and follow-up with repetitive MRI scans was performed, in an attempt to confirm the diagnosis and facilitate prompt and appropriate treatment. (C) 2004 Elsevier B.V. All rights reserved.
- Published
- 2004
37. The 'Palliative Care Quality of Life Instrument (PQLI)' in terminal cancer patients
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Mystakidou, K. Tsilika, E. Kouloulias, V. Parpa, E. Katsouda, E. Kouvaris, J. Vlahos, L.
- Abstract
Background: This paper describes the development of a new quality of life instrument in advanced cancer patients receiving palliative care. Methods: The Palliative Care Quality of Life Instrument incorporates six multi-item and one single-item scale. The questionnaire was completed at baseline and one-week after. The final sample consisted of 120 patients. Results: The average time required to complete the questionnaire, in both time points, was approximately 8 minutes. All multi-item scales met the minimal standards for reliability (Cronbach's alpha coefficient ≥.70) either before or during palliative treatment. Test-retest reliability in terms of Spearman-rho coefficient was also satisfactory (p < 0.05). Validity was demonstrated by interitem correlations, comparisons with ECOG performance status, factor analysis, criterion-related validation, and correlations with the Assessment of Quality of Life in Palliative Care Instrument (AQEL), and the European Organisation for Research and Treatment of Cancer (EORTC) Core Quality of Life Questionnaire (QLQ-C30, version 3.0). Conclusion: The PQLI is a reliable and valid measure for the assessment of quality of life in patients with advanced stage cancer. © 2004 Mystakidou et al; licensee BioMed Central Ltd.
- Published
- 2004
38. Pain management of cancer patients with transdermal fentanyl: A study of 1828 step I, II, & III transfers
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Mystakidou, K. Parpa, E. Tsilika, E. Katsouda, E. Kouloulias, V. Kouvaris, J. Georgaki, S. Vlahos, L.
- Abstract
The aim of this observational study was to examine pain management outcomes and quality of life (QoL) measures in cancer patients with intolerable or chronic severe pain transferring from World Health Organization's step I, II, and III analgesics to the transdermal therapeutic fentanyl system (TTS-F). This study examines the safety and efficacy of TTS-F in long-term pain management, addressing the role of TTS-F in cancer pain. Pain measures were assessed in 1828 patients (step I [naïve], 268; step II [codeine], 1239; and step III [morphine], 321) on the basis of selected questions from the Greek-Brief Pain Inventory. Overall treatment satisfaction (scale, 1 to 4), QoL, and European Collaborative Oncology Group (ECOG) status were also recorded. These were assessed in relation to TTS-F dose, stratified by transfer step, primary cancer, metastases, type of pain, and concomitant use of anti-inflammatory drugs. Of 1828 patients, 100 (5.5%) withdrew, and an addition 14 (0.8%) discontinued because of side effects. A total of 1714 continued on study; 744 patients died, and 970 departed during the study period. In total, 93.8% were satisfied with their pain relief, and complete patient satisfaction was obtained within 2 months. Pain, QoL, and treatment satisfaction measures demonstrated statistically significant improvements over time, independent of the step transfer. Although doses of TTS-F were higher for step III > II > I and for metastatic than nonmetastatic, the median dose for all groups remained 50 μg/h throughout the study period. Pain and QoL improvements were independent of patient characteristic(s). Direct transfer to TTS-F for patients with intolerable or chronic moderate to severe cancer pain offers an efficient and safe long-term analgesic option for palliative care patients. Careful selection and follow-up by experienced palliative care specialists are mandatory. TTS-F as a first-line analgesic approach for severe cancer pain should be considered a viable option because of its durable efficacy and low incidences of side effects. Perspective At a fairly constant dose of 50 μg/h, the transdermal therapeutic fentanyl system offers a safe, well-tolerated pain relief treatment for carefully monitored patients with cancer pain. The authors stress that this includes patients who experience difficulties in their pain management while progressing through the WHO's ladder for pain management. © 2004 by the American Pain Society.
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- 2004
39. Is early recognition of radiologically silent brain metastasis from breast cancer beneficial? A retrospective study of 22 cases
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Mystakidou, K. Kouloulias, V. Tsilika, E. Boviatsis, E. Kouvaris, J. Matsopoulos, G. Vlahos, L.
- Abstract
Over a period of 10 years, twenty-two patients with T2-3N2Mx breast cancer presented with symptoms of increased intracranial pressure (ICP), but brain CT scan and/or MRI didnot reveal any signs of a space occupying lesion. A brain CT scan and an MRI study were performed every 15 days. Ten patients refused this close follow up. Thus, two groups were formed group A (n = 12) included the patients who were close's followed and group B (n = 10) consisted of those patients who were not. Therefore, Group A, being under careful follow-up, initiated radiotherapy were quickly. The median time from the presentation of increased ICP symptoms until the appearance of metastases on CT and/or MRI directly followed by brain irradiation was 48 days (SE = 6.1) for group A and 72 days (SE = 0.7) for group B (p = 0.0085, log-rank test). In group A, median Overall Survival (OS) was 171.0 (SE = 21.5) days, and was 99.0 (SE = 6.3) days (p = 0.014) for group B. Volumetric analysis of the secondary brain lesions at the initiation of radiotherapy showed a total volume of metastatic lesions of 19.5 -+ 13.9 cm 3 versus 65.3 -+ 20.7 cm 3 for groups A and B, respectively (p < 0.001, Mann-Whitney test). Post-radiotherapy, Karnofsky Performance Status and Visual Analogue Score were also improved for group A versus B (p = 0.002). Group A appeared to benefit from close follow-up since the metastases were detected and irradiation was given sooner compared with group B, thus achieving better performance status and prolonged survival. Radiologically silent brain metastases from breast cancer should not be ignored because timely whole brain irradiation should be the goal of clinicians. Clinical suspicion should lead to close follow-up with multiple CT/MRI studies and cerebral spinal fluid cytology until the final diagnosis.
- Published
- 2004
40. Microwave Hyperthermia in Conjunction with Radiotherapy in Superficial Tumours: Correlation of Thermal Parameters with Tumour Regression
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Kouloulias, V, primary, Triantopoulou, S, additional, Efstathopoulos, E, additional, Platoni, K, additional, Kouvaris, J, additional, Uzunoglou, N, additional, Antypas, C, additional, Karaiskos, P, additional, Aggelakis, P, additional, Vrouvas, J, additional, and Kelekis, N, additional
- Published
- 2014
- Full Text
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41. Ovarian müllerian adenosarcoma
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Sykiotis, C. Kouvaris, J. Karvouni, H. Vitoratos, N. Loghis, C. Salamalekis, E. Creatsas, G.
- Abstract
A 46-year-old woman with Von Recklinghausen disease was found to have a left ovarian mass. She was subjected to total abdominal hysterectomy with bilateral salpingo-oophorectomy. On section, the tumor was cystic with a polypoid solid portion protruding into its cavity. Microscopically, it was a müllerian adenosarcoma with a low-grade stromal component arising in ovarian endometriosis, with no heterologous elements. The patient underwent postoperative radiotherapy and chemotherapy. One year later, a brain metastasis was found localized in the left thalamus and was treated by gamma-knife radiosurgery. Fifteen months later, the brain tumor recurred, and the patient received a second treatment with gammaknife radiosurgery. No recurrence in the pelvis was found. Six years postoperatively, the patient is free of disease.
- Published
- 2001
42. Prognostic factors for survival in invasive squamous cell vulvar carcinoma: A univariate analysis
- Author
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Kouvaris, J Kouloulias, V Loghis, C Sykiotis, C and Balafouta, M Vlahos, L
- Abstract
The charts of 50 women with invasive squamous cell vulvar carcinoma were reviewed retrospectively, and pathologic, medical and life style factors were analyzed for their possible influence on survival using the Cox regression univariate model. The median age of the cohort was 73.5 years. The patient distribution according to stage was as follows: stage I: 17; stage II: 16; stage III: 12, and stage IVa: 5 patients. The median follow-up was 61 months. The univariate analysis revealed that the overall survival was decreased by age greater than or equal to 73.5 years (p = 0.0185), advanced stage (p = 0.0026), grade III differentiation (p < 0.0001), ulcerative type of the tumor (p = 0.0055), tumor diameter > 40 mm (p = 0.0053), obesity (p = 0.011), smoking (p = 0.0177), diabetes (p = 0.0122) and hypertension (p = 0.044), but not with clitoral involvement. Copyright (C) 2001 S. Karger AG. Basel.
- Published
- 2001
43. A comment from a radiotherapeutic point of view regarding the ASCO guidelines on the role of bisphosphonates in breast cancer
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Kouloulias, VE Dardoufas, C Kouvaris, J Gennatas, C and Vlahos, L
- Published
- 2001
44. Pre-Radiotherapy (RT) treatment planning factors to take into account in oncologic patients with Inflammatory Bowel Diseases (IBD)
- Author
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Tolia, M., primary, Zygogianni, A., additional, Kyrgias, G., additional, Theodorou, K., additional, Kappas, C., additional, Kouvaris, J., additional, and Kouloulias, V., additional
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- 2014
- Full Text
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45. Fetal dose evaluation during breast cancer radiotherapy
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Antypas, C Sandilos, P Kouvaris, J Balafouta, E Karinou, E Kollaros, N Vlahos, L
- Abstract
Purpose: The aim of the work was to estimate the radiation dose delivered to the fetus in a pregnant patient irradiated for breast cancer. Methods and Materials: A 45-year woman was treated for left breast cancer using a 6 MV photon beam with two isocentric opposing tangential unwedged fields. Daily dose was 2.3 Gy at 95% isodose line given by two fields/day, 5 days/week. A total dose of 46 Gy was given in 20 fractions over a 4-week period. Pregnancy confirmed during the second therapeutic week. Treatment lasted between the second and sixth gestation week. Radiation dose to fetus was estimated from in vivo and phantom measurements using thermoluminescence dosimeters and an ionization chamber. In vivo measurements were performed by inserting either a catheter with TL dosimeters or ionization chamber into the patient’s rectum. Phantom measurements were performed by simulating the treatment conditions on an anthropomorphic phantom. Results: TLD measurements (in vivo and phantom) revealed fetal dose to be 0.085% of the tumor dose, corresponding to a cumulative fetal dose of 3.9 cGy for the entire treatment of 46 Gy. Chamber measurements (in vivo and phantom) revealed a fetal dose less than the TLD result: 0.079 and 0.083% of the tumor dose corresponding to cumulative fetal dose of 3.6 cGy and 3.8 cGy for in vivo and phantom measurement, respectively. Conclusions: It was concluded that the cumulative dose delivered to the unshielded fetus was 3.9 cGy for a 46 Gy total tumor dose. The estimated fetal dose is low compared to the total tumor dose given due to the early stage of pregnancy, the large distance between fundus-radiation field, and the fact that no wedges and/or lead blocks were used. No deterministic biological effects of radiation on the live-born embryo are expected. The lifetime risk for radiation-induced fatal cancer is higher than the normal incidence, but is considered as inconsequential. (C) 1998 Elsevier Science Inc.
- Published
- 1998
46. Combined teletherapy and intracavitary brachytherapy boost for the treatment of nasopharyngeal carcinoma
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Kouvaris, J Plataniotis, GA Sandilos, P Dardoufas, C and Damatopoulou, A Vlahos, L Papavasiliou, C
- Abstract
For the non-metastatic nasopharyngeal carcinoma, external beam radiation therapy (median dose 64 Gy) and a boost of intracavitary irradiation (ICRT) has been given. Caesium-137 pellets of 40 mCi were used at a dose rate of 3-3.5 Gy/h, 1 cm from the sources. The median dose was 8.5 Gy. Overall 5-year actuarial survival for the 48 studied patients was 60.4% and LRFS was 64%. The procedure was well tolerated by our patients.
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- 1996
47. Effect of fluconazole antifungal prophylaxis on oral mucositis in head and neck cancer patients receiving radiotherapy
- Author
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Nicolatou-Galitis, O Velegraki, A Sotiropoulou-Lontou, A and Dardoufas, K Kouloulias, V Kyprianou, K Kolitsi, G and Skarleas, C Pissakas, G Papanicolaou, VS Kouvaris, J and Nicolatou-Galitis, O Velegraki, A Sotiropoulou-Lontou, A and Dardoufas, K Kouloulias, V Kyprianou, K Kolitsi, G and Skarleas, C Pissakas, G Papanicolaou, VS Kouvaris, J
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- 2005
48. 464 Preliminary Results Following Hypofractionated Irradiation in Breast-conserving Therapy
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Gogalis, J., primary, Armpilia, C., additional, Zygogianni, A., additional, and Kouvaris, J., additional
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- 2012
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49. 5127 POSTER Three Fractions per Week Radiotherapy for Early Breast Cancer -Short-term Morbidity and Preliminary Outcomes
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Goqalis, J., primary, Armpilia, C., additional, Balafouta, M., additional, Zygogianni, A., additional, Dalakidis, A., additional, and Kouvaris, J., additional
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- 2011
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50. PRELIMINARY RESULTS ON THE IMPACT OF HYPOFRACTIONATED RADIOTHERAPY IN CARDIAC TOXICITY (CARDIAC FUNCTION) IN EARLY STAGED LEFT SIDED BREAST CANCER PATIENTS: A PROSPECTIVE RANDOMIZED PHASE II STUDY
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Fragkandrea-Nixon, I., primary, Kouloulias, V., additional, Mpaziotis, N., additional, Mpetsou, S., additional, Sotiropoulou-Lontou, A., additional, Gouliamos, A., additional, and Kouvaris, J., additional
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- 2011
- Full Text
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