11 results on '"Delahunt B"'
Search Results
2. Prognostic significance of microscopic vascularity for clear cell renal cell carcinoma
- Author
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DELAHUNT, B., primary, BETHWAITE, P.B., additional, and THORNTON, A., additional
- Published
- 1997
- Full Text
- View/download PDF
3. Low-grade prostate cancer should still be labelled cancer.
- Author
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Iczkowski KA, Molina M, Egevad L, Bostwick DG, van Leenders GJLH, La Rosa FG, van der Kwast T, Berney DM, Evans AJ, Wheeler TM, Leite KRM, Samaratunga H, Srigley J, Varma M, Tsuzuki T, Lucia MS, Crawford ED, Harris RG, Stricker P, Lawrentschuk N, Woo HH, Fleshner NE, Shore ND, Yaxley J, Bratt O, Wiklund P, Roberts M, Cheng L, and Delahunt B
- Subjects
- Male, Humans, Neoplasm Grading, Prostatectomy, Prostate, Prostatic Neoplasms surgery
- Published
- 2022
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- View/download PDF
4. Oncological and urinary outcomes following low-dose-rate brachytherapy with a median follow-up of 11.8 years.
- Author
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Yaxley WJ, Mackean J, Desai DJ, Tsang G, Dixon J, Samaratunga H, Delahunt B, Egevad L, Gardiner RA, and Yaxley JW
- Subjects
- Male, Humans, Prostate-Specific Antigen, Follow-Up Studies, Retrospective Studies, Brachytherapy adverse effects, Urethral Stricture etiology, Prostatic Neoplasms
- Abstract
Objectives: To examine the long-term oncological outcomes and urological morbidity of low-dose-rate prostate brachytherapy (LDRBT) monotherapy using live intraoperative dosimetry planning and an automated needle navigation delivery system for the treatment of men with low and intermediate-risk prostate cancer., Patients and Methods: A prospective database of 400 consecutive patients who underwent LDRBT between July 2003 and June 2015 was retrospectively reviewed to assess urinary side-effects and biochemical progression, based on the Phoenix definition and also a definition of a prostate-specific antigen (PSA) level of ≥0.2 μg/L., Results: Minimum patient follow-up was 5.5 years. The median follow-up of the entire cohort was 11.8 years. The median (range) PSA level was 6.1 (0.9-17) μg/L and the median Gleason score was 3 + 4. The biochemical relapse-free survival (RFS; freedom from biochemical recurrence) based on the Phoenix definition was 85.8% (343/400). The RFS using a 'surgical' definition of a PSA level of <0.2 μg/L was 71% (284/400). Of the 297 men followed for ≥10 years, prostate cancer-specific survival (PCSS) was 98% (291/297). Post-LDRBT urethral stricture developed in 11 men (2.8%, 11/400). For men with ≥10 years of follow-up, 22 men (7.4%, 22/297) required a pad for either stress or urge urinary incontinence (UI). UI was identified in only 2.2% (one of 46) of men who had a bladder neck incision (BNI) before LDRBT., Conclusion: LDRBT is associated with excellent PCSS, with a median follow-up of 11.8 years. The risk of post-implantation urethral stricture and UI is low and a pre-implantation BNI for management of bladder outflow obstruction does not increase the risk of UI or urethral stricture., (© 2022 The Authors. BJU International published by John Wiley & Sons Ltd on behalf of BJU International.)
- Published
- 2022
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5. Prostate cancer grading, time to go back to the future.
- Author
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Egevad L, Delahunt B, Bostwick DG, Cheng L, Evans AJ, Gianduzzo T, Graefen M, Hugosson J, Kench JG, Leite KRM, Oxley J, Sauter G, Srigley JR, Stattin P, Tsuzuki T, Yaxley J, and Samaratunga H
- Subjects
- Humans, Male, Forecasting, Neoplasm Grading methods, Prostatic Neoplasms diagnosis
- Published
- 2021
- Full Text
- View/download PDF
6. Histological comparison between predictive value of preoperative 3-T multiparametric MRI and 68 Ga-PSMA PET/CT scan for pathological outcomes at radical prostatectomy and pelvic lymph node dissection for prostate cancer.
- Author
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Franklin A, Yaxley WJ, Raveenthiran S, Coughlin G, Gianduzzo T, Kua B, McEwan L, Wong D, Delahunt B, Egevad L, Samaratunga H, Brown N, Parkinson R, Roberts MJ, and Yaxley JW
- Subjects
- Aged, Aged, 80 and over, Edetic Acid analogs & derivatives, Gallium Isotopes, Gallium Radioisotopes, Humans, Lymph Node Excision, Lymph Nodes surgery, Lymphatic Metastasis diagnostic imaging, Lymphatic Metastasis pathology, Male, Middle Aged, Neoplasm Grading, Neoplasm Invasiveness, Nomograms, Oligopeptides, Predictive Value of Tests, Probability, Prospective Studies, Prostatectomy, Prostatic Neoplasms surgery, Radiopharmaceuticals, Retrospective Studies, Lymph Nodes diagnostic imaging, Lymph Nodes pathology, Multiparametric Magnetic Resonance Imaging, Positron Emission Tomography Computed Tomography methods, Prostatic Neoplasms diagnostic imaging, Prostatic Neoplasms pathology
- Abstract
Objective: To evaluate the ability of preoperative multiparametric magnetic resonance imaging (mpMRI) and a gallium-68 prostate-specific membrane antigen positron emission tomography/computed tomography (
68 Ga-PSMA PET/CT) scan to predict pathological outcomes and also identify a group of men with a <5% risk of histological pelvic lymph node metastasis (LNM) at pelvic lymph node dissection (PLND) performed during a robot-assisted laparoscopic radical prostatectomy (RALP) for prostate cancer. We then aimed to compare these results to known risk calculators for LNM, including the Cancer of the Prostate Risk Assessment (CAPRA) score, Memorial Sloan Kettering Cancer Centre (MSKCC) and Briganti nomograms., Patients and Methods: Between July 2014 and September 2019 only men who had both a preoperative mpMRI and staging68 Ga-PSMA PET/CT at our institution followed by a RALP with PLND referred to a single specialist uropathology laboratory were considered for inclusion. The data were collected retrospectively prior to February 2019 and in a prospective manner thereafter. A model was built to allocate probabilities of the men with a negative68 Ga-PSMA PET/CT scan having a <5% risk of histologically LNM at RALP based on the preoperative radiological staging., Results: A total of 233 consecutive men met the inclusion criteria of which 58 men (24.9%) had a LNM identified on PLND histology. The median (range) International Society of Urological Pathology (ISUP) Grade was 5 (1-5) and the median (range) prostate-specific antigen level was 7.4 (1.5-72) ng/mL. The median (range) number of resected lymph nodes was 16 (1-53) and the median (range) number of positive nodes identified on histology was 2 (1-22). Seminal vesicle invasion on mpMRI was more common in node-positive men than in the absence of LNM (31% vs 12%). The maximum standardised uptake value of the primary tumour on68 Ga-PSMA PET/CT was higher in men with LNM (median 9.2 vs 7.2, P = 0.02). Suspected LNM were identified in 42/233 (18.0%) men with68 Ga-PSMA PET/CT compared with 22/233 (9.4%) men with mpMRI (P = 0.023). The positive and negative predictive value for68 Ga-PSMA PET/CT was 66.7% and 84.3% respectively, compared to 59.1% and 78.7% for mpMRI. A predictive model showed only two men (4.2%) with a negative preoperative68 Ga-PSMA PET/CT would be positive for a histological LNM if they are ISUP Grade < 5 and Prostate Imaging-Reporting and Data System (PI-RADS) <5; or ISUP Grade 5 with PI-RADS < 4. An inspection of three additional variables: CAPRA score, MSKCC and Briganti nomograms did not improve the predictive probability for this group. However, of the 61 men with ISUP Grade 4-5 malignancy and also a PI-RADS 5 mpMRI, 20 (32.8%) men had a microscopic LNM despite a negative preoperative68 Ga-PSMA PET/CT., Conclusion: Preoperative68 Ga-PSMA/PET CT was more sensitive in identifying histological pelvic LNM than 3-T mpMRI. Men with a negative68 Ga-PSMA PET/CT have a lower risk of LNM than predicted with CAPRA scores or MSKCC and Briganti nomograms. We identified that the combination of a negative preoperative68 Ga-PSMA PET/CT, ISUP biopsy Grade <5 and PI-RADS <5 prostate mpMRI, or an ISUP Grade 5 with PI-RADS <4 on mpMRI was associated with a <5% risk of a LNM. The addition of CAPRA scores, MSKCC and Briganti nomograms did not improve the predictive probability within this model. Conversely, men with ISUP Grade 4-5 malignancy associated with a PI-RADS 5 prostate mpMRI had a >30% risk of microscopic LNM despite a negative preoperative68 Ga-PSMA PET/CT and this high-risk group would appear suitable for an extended PLND at the time of a radical prostatectomy., (© 2020 The Authors BJU International © 2020 BJU International Published by John Wiley & Sons Ltd.)- Published
- 2021
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7. TNM clinical staging of prostate cancer: issues and solutions.
- Author
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Varma M, Cochlin D, Delahunt B, Kynaston H, Rees J, Rous B, and Narahari K
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- Humans, Male, Organ Size, Prostate-Specific Antigen, Quality Improvement, Lymphatic Metastasis pathology, Neoplasm Staging methods, Prostatic Neoplasms pathology
- Published
- 2019
- Full Text
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8. Accuracy of prostate biopsies for predicting Gleason score in radical prostatectomy specimens: nationwide trends 2000-2012.
- Author
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Danneman D, Drevin L, Delahunt B, Samaratunga H, Robinson D, Bratt O, Loeb S, Stattin P, and Egevad L
- Subjects
- Aged, Biopsy, Needle, Humans, Male, Neoplasm Grading trends, Predictive Value of Tests, Reproducibility of Results, Sweden, Time Factors, Prostate pathology, Prostatectomy methods, Prostatic Neoplasms pathology, Prostatic Neoplasms surgery
- Abstract
Objectives: To investigate how well the Gleason score in diagnostic needle biopsies predicted the Gleason score in a subsequent radical prostatectomy (RP) specimen before and after the 2005 International Society of Urological Pathology (ISUP) revision of Gleason grading, and if the recently proposed ISUP grades 1-5 (corresponding to Gleason scores 6, 3 + 4, 4 + 3, 8 and 9-10) better predict the RP grade., Patients and Methods: All prostate cancers diagnosed in Sweden are reported to the National Prostate Cancer Register (NPCR). We analysed the Gleason scores and ISUP grades from the diagnostic biopsies and the RP specimens in 15 598 men in the NPCR who: were diagnosed between 2000 and 2012 with clinical stage T1-2 M0/X prostate cancer on needle biopsy; were aged ≤70 years; had serum PSA concentration of <20 ng/mL; and underwent a RP <6 months after diagnosis as their primary treatment., Results: Prediction of RP Gleason score increased from 55 to 68% between 2000 and 2012. Most of the increase occurred before 2005 (nine percentage points; P < 0.001); however, when adjusting for Gleason score and year of diagnosis in a multivariable analysis, the prediction of RP Gleason score decreased over time (odds ratio [OR] 0.98; P < 0.002). A change in the ISUP grades would have led to a decreasing agreement between biopsy and RP grades over time, from 68% in 2000 to 57% in 2012, with an OR of 0.95 in multivariable analysis (P < 0.001)., Conclusion: Agreement between biopsy and RP Gleason score improved from 2000 to 2012, with most of the improvement occurring before the 2005 ISUP grading revision. Had ISUP grades been used instead of Gleason score, the agreement between biopsy and RP grade would have decreased, probably because of its separation of Gleason score 7 into ISUP grades 2 and 3 (Gleason score 3 + 4 vs 4 + 3)., (© 2016 The Authors BJU International © 2016 BJU International Published by John Wiley & Sons Ltd.)
- Published
- 2017
- Full Text
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9. Consensus guidelines for reporting prostate cancer Gleason Grade.
- Author
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Egevad L, Samaratunga H, Srigley JR, Delahunt B, Zietman A, Smith J, Klein E, Droller M, Dasgupta P, and Catto J
- Subjects
- Consensus, Humans, Male, Prostate-Specific Antigen, Neoplasm Grading, Prostatic Neoplasms
- Published
- 2016
- Full Text
- View/download PDF
10. Prostate cancer grading: recent developments and future directions.
- Author
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Delahunt B, Egevad L, Grignon DJ, Srigley JR, and Samaratunga H
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- Biopsy, Needle, Consensus Development Conferences as Topic, Humans, Male, Neoplasm Grading methods, Neoplasm Grading trends, Prostate pathology, Prostatic Neoplasms pathology
- Published
- 2016
- Full Text
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11. Impact of androgen suppression and zoledronic acid on bone mineral density and fractures in the Trans-Tasman Radiation Oncology Group (TROG) 03.04 Randomised Androgen Deprivation and Radiotherapy (RADAR) randomized controlled trial for locally advanced prostate cancer.
- Author
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Denham JW, Nowitz M, Joseph D, Duchesne G, Spry NA, Lamb DS, Matthews J, Turner S, Atkinson C, Tai KH, Gogna NK, Kenny L, Diamond T, Smart R, Rowan D, Moscato P, Vimieiro R, Woodfield R, Lynch K, Delahunt B, Murray J, D'Este C, McElduff P, Steigler A, Kautto A, and Ball J
- Subjects
- Aged, Aged, 80 and over, Androgen Antagonists administration & dosage, Antineoplastic Agents, Hormonal administration & dosage, Australia, Follow-Up Studies, Humans, Male, Middle Aged, New Zealand, Prostatic Neoplasms pathology, Spinal Fractures prevention & control, Treatment Outcome, Zoledronic Acid, Androgen Antagonists adverse effects, Antineoplastic Agents, Hormonal adverse effects, Bone Density drug effects, Bone Density Conservation Agents therapeutic use, Diphosphonates therapeutic use, Imidazoles therapeutic use, Prostatic Neoplasms drug therapy, Spinal Fractures chemically induced
- Abstract
Objective: To study the influence of adjuvant androgen suppression and bisphosphonates on incident vertebral and non-spinal fracture rates and bone mineral density (BMD) in men with locally advanced prostate cancer., Patients and Methods: Between 2003 and 2007, 1071 men with locally advanced prostate cancer were randomly allocated, using a 2 × 2 trial design, to 6 months i.m. leuprorelin (androgen suppression [AS]) before radiotherapy alone ± 12 months additional leuprorelin ± 18 months zoledronic acid (ZdA), commencing at randomization. The main endpoint was incident thoraco-lumbar vertebral fractures, which were assessed radiographically at randomization and at 3 years, then reassessed by centralized review. Subsidiary endpoints included incident non-spinal fractures, which were documented throughout follow-up, and BMD, which was measured in 222 subjects at baseline, 2 years and 4 years., Results: Incident vertebral fractures at 3 years were observed in 132 subjects. Their occurrence was not increased by 18 months' AS, nor reduced by ZdA. Incident non-spinal fractures occurred in 72 subjects and were significantly related to AS duration but not to ZdA. Osteopenia and osteoporosis prevalence rates at baseline were 23.4 and 1.4%, respectively, at the hip. Treatment for 6 and 18 months with AS caused significant reductions in hip BMD at 2 and 4 years (P < 0.01) and ZdA prevented these losses at both time points., Conclusion: In an AS-naïve population, 18 months of ZdA treatment prevented the sustained BMD losses caused by 18 months of AS treatment; however, the study power was insufficient to show that AS duration or ZdA influenced vertebral fracture rates., (© 2013 The Authors. BJU International © 2013 BJU International.)
- Published
- 2014
- Full Text
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