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Background: The tumor phenotype may change between primary and metastatic breast cancer. We compared the expression of estrogen receptor (ER), progesterone receptor (PR), and HER2 in a series of primary breast carcinomas (PBC) with their metastatic relapses and analyzed the impact of any changes on survival., Materials and Methods: It was a single-center retrospective study, collecting consecutive cases of metastatic breast carcinoma diagnosed in the pathology and medical oncology departments at Habib Bourguiba University Hospital in Sfax, Tunisia. An immunohistochemical study was used to assess ER, PR, and HER2 expression. Overall survival (OS) and post-metastasis survival (PMS) were evaluated using multivariable Cox regression analysis., Results: Our study included 68 patients. ER and PR status changed in 29.4 % and 39.7 % of cases, respectively. Conversions were mainly from positive to negative status (22 % and 23.5 % for ER and PR, respectively). Differences in HER2 status were observed in 19.6 % of cases, with loss of overexpression in 6 patients (10.7 %). Adjuvant trastuzumab therapy and PBC molecular subtype (HR-, HER2+) were associated with HER2 status discordance (p = 0.02 and 0.03, respectively). On multivariable analysis, HR-negative conversion tumors were significantly associated with a worse OS (p = 0.042) and PMS (p < 0.001), compared to HR-concordant positive tumors., Conclusion: This study establishes that HR and HER2 status discordance between primary and metastatic breast carcinoma has a prognostic impact on patient outcome. Analyzing these receptors' status in all newly diagnosed cases of metastatic breast carcinoma is strongly recommended and would provide information for changing treatment strategies., Competing Interests: Conflict of interest The authors have no conflicts of interest to disclose., (Published by Elsevier Inc.)

Background: Previous studies have shown that poor prognostic indicators of inflammatory breast cancer (IBC) include younger age at diagnosis, poorer tumor grade, negative estrogen receptor, lesser degree of pathological response in the breast and lymph nodes., Methods: This is a retrospective study conducted over a period of 12 years between January 2008 and December 2019 at the medical oncology department at Habib Bourguiba University Hospital in Sfax. We included in this study women with confirmed IBC. We excluded patients with no histological evidence, those whose medical records were unusable. Data collection was done from patient files. The aim of this study was to analyze the factors of poor prognosis of this entity., Results: During a period of 12 years (2008-2019), 2879 cases of breast cancer were treated at Habib Bourguiba hospital in Sfax. 81 IBC were included. The incidence of IBC was 3%. The average age was 52.4 years (26-87 years). Invasive ductal carcinoma was the most frequent histological type (85.7%). Hormone receptor were positive in 64%. Human Epidermal Growth Factor Receptor-2 (HER2) was overexpressed in 35.9% of cases. The proliferation index Ki-67 was analyzed in 34 cases. It was >20% in 24 cases. Luminal A, luminal B, HER2+++, triple negative were found in 13%, 50.7%, 16% and 20% respectively. Metastases at diagnosis were found in 38%. Poor prognostic factors significantly influencing overall survival in univariate analysis were metastatic stage, high SBR grade, lymph node involvement, in particular greater than 3 nodes, negative hormone receptors, triple-negative molecular profile and occurrence of relapse., Conclusion: Number of positive lymph nodes greater than 3 and the occurrence of relapse were independent prognostic factors in case of localized IBC. Metastatic stage was associated with a very poor prognosis.

Background: Each subgroup of immune cells has a different prognostic role in breast cancer; however, the prognostic impact of tumor-infiltrating natural killer cells (TINKs) is still not well established. Our aim was to assess the prognostic impact of natural killer (NK) cells in breast carcinomas., Materials and Methods: NK cells infiltration were assessed by immunohistochemistry (IHC). Statistical analyses were performed to evaluate the correlation of NK cells with clinical-pathological features and outcome., Results: CD56 IHC was realized in 126 patients. NK cells infiltration showed significant and positive association with tumor high Scarff-Bloom-Richardson (SBR) grade. NK cells were significantly associated with HER2-positive breast cancer and triple-negative breast cancer subtypes. Analyses showed significant and inverse correlation with progesterone and estrogen receptors expression status. High NK cells were significantly related to high Ki-67 labeling index. Our data showed that high NK cells infiltrate was significantly associated with tumor-infiltrating lymphocytes in breast cancer tissues. At a median follow-up of 5.5 years, high CD56 expression (≥ 5 cells/10 high power field) was associated significantly with a good overall survival and with good disease-free survival., Conclusion: In this study, we assessed the important prognostic role of TINKs in breast carcinomas, which seems to be evident despite its association with aggressive pathological features. Thus evaluation of NK cells can be standardized and integrated in daily routine., (Copyright © 2021 Elsevier Inc. All rights reserved.)

The HER2 receptor (Human Epidermal Growth Receptor 2) is a transmembrane receptor with tyrosine kinase activity that is over-expressed in 25-30 % of breast carcinomas. Its activation is associated with an exaggeration of cell proliferation with an increase in repair capacity resulting in increased radioresistance. On cardiac tissues, HER2 receptor activation plays a cardio-protective role. Trastuzumab, the first anti-HER2 drug used to treat patients with breast cancer overexpressing HER2 receptor , inhibits the cascade of reactions resulting in the proliferation of tumor cells, thus restoring cellular radiosensitivity. However, the combination of Trastuzumab with radiation therapy also removes HER2 receptor cardio-protective role on myocardial cells which increases the risk of cardiotoxicity. Thus, the concomitant association of these two modalities has long been a subject of controversy. Recent advances in radiation therapy technology and early detection of cardiac injury may limit the cardiotoxicity of this combination. Through this review, we developed the biological basis and the benefit-risk of concomitant combination of radiotherapy and Trastuzumab in adjuvant treatment of breast cancers overexpressing HER2 and we discuss the modalities of its optimization., (Copyright © 2021 Société Française du Cancer. Published by Elsevier Masson SAS. All rights reserved.)

B7-H6 and PD-L1 belong to the B7 family co-stimulatory molecules fine-tuning the immune response. The present work investigates the clinical effect of B7-H6 protein expression with PD-L1 status and the infiltration of natural killer cells as potential biomarkers in breast tumor inflammatory microenvironment. The expression levels of B7-H6 protein by cancer cells and immune infiltrating cells in human breast cancer tissues and evaluate their associations with PD-L1 expression, NK cell status, clinical pathological features and prognosis were explored. The immunohistochemistry labeling method was used to assess B7-H6 and PD-L1 proteins expression by cancer and immune cells. The associations between immune checkpoint, major clinical pathological variables and survival rates were analyzed. B7-H6 protein was depicted in both breast and immune cells. Results showed that Tumor B7-H6 expression is highly associated with Her-2 over expression. B7-H6 + immune cells are highly related to the Scarff-Bloom-Richardson grade and associated with PD-L1 expression and NK cells status. Survival analysis revealed a better prognosis in patients with low expression of B7-H6 by cancer cells. Conversely, B7-H6 + immune cells were significantly associated with longer survival. Findings strongly suggest an interaction between B7 molecules that contributes to a particular design of the inflammatory microenvironment. This may influence the efficiency of therapies based on antibodies blocking the PD-L1/PD1 pathway and can explain the detection of clinical benefits only in a fraction of patients treated with immune checkpoint inhibitors.

Metastases of ovarian carcinoma to the breast are uncommon. The incidence of ovarian metastasis to the breast ranges from 0.5% to 1.2%. Nevertheless, its detection and distinction from other primaries, especially primary breast carcinoma, is important as treatment and prognosis differ significantly. We report the case of a 38-year-old Tunisian woman with bilateral metastases to breast from ovarian carcinoma. Through a review of literature, we discuss the clinical, radiological and histological characteristics of ovarian metastases to the breast., (© 2020 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.)

Background: The Ewing sarcoma (ES) represents 10 to 15% malignant bone tumors and 40 to 45% pediatric malignant bone tumors. The aim of this review is to clarify the therapeutic results and prognostic factors of this entity., Methods: A systematic review of the literature was performed. Studies focused on the management of ES were considered for inclusion., Result: ES represents a model of multidisciplinary approach. The optimization of ES multimodality therapeutic strategies has resulted from the efforts of several national and international groups in Europe and North America and from cooperation between the pediatric and medical oncologists. The overall 5- year survival of Ewing localized tumors was 70% versus 30% in metastatic ES., Conclusion: The treatment of ES includes neoadjuvant and adjuvant chemotherapies with surgery and/or radiotherapy for control of the primary site and possible metastatic disease. The role of high-dose chemotherapy is still debated., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.)

Introduction: Febrile Neutropenia (FN) secondary to chemotherapy is the most common and the earliest hematological complication. The aim of this work is to study the predictive factors of FN. Materiel and Methods: This is a retrospective study including 186 episodes of FN induced by chemotherapy treated in the department of oncology at Sfax in southern Tunisia during the period between 1 January 2006 and 31 December 2010., Result: The mean age of patients was 40 years. One hundred and seventeen patients had solid tumors (86.02%), 18 patients (13.23%) had hematological malignancies and one patient was treated for hypo pharyngeal cancer and aplastic Anemia. Chemotherapy was indicated for curative purpose in 94 cases and palliative purpose in 92 cases. One hundred and four patients (76.5%) had a single episode of FN and 32 (23.5%) had at least two episodes. The average time of febrile neutropenia was 11 days., Conclusion: Personal history of FN, poor performance status, chemotherapy regimen and the stage of the disease increased the risk of FN, with a statistically significant difference. Other factors such as hematological malignancies, the age over 65 years and concurrent chemo radiotherapy were not retained in our series.

Introduction: We propose in this study to analyze the results obtained in the experience of Dar El Amal by comparing the two age groups 45-49 years versus over 50 years. This experience of Dar Al Amal was started in Sfax (Tunisia) in 2004. The project had included women over a period of six and a half years. The target population was all women over the age of 45 years., Results: In the period of the study, 10 000 women had at least one mammography within the first round in Dar El Amal. The average age was 51.56 years. The recall rate was more important in women aged 45-49 years compared with those over 50 years with a statistically significant relationship (p=0.013). Tests classified ACR0 and ACR3 predominated in women aged between 45 and 49 years with a statistically significant relationship. The positive predictive value (PPV) of mammography was better in those over 50 years (p=0.012)., Conclusion: The majority of countries in the world opt for screening from the age of 50 years. Women under 50 years are not routinely concerned, but they have more right to a targeted and appropriate screening.

Introduction: Breast cancer and pregnancy is rare. It is defined by the discovery of breast cancer during pregnancy or within one year after delivery. Throughout this study, we analyzed the characteristics of this entity with review of the literature., Materials and Methods: We report through a retrospective study of breast cancer in pregnant women, a series of 11 cases collected at the oncology department in Sfax between 1994 and 2012., Result: The average age of our patients at diagnosis was 35 years. The average term of pregnancy was 22 weeks. Nine cases were diagnosed during pregnancy. The pregnancy outcome was well with babies in a good health, in 10 cases. The prognosis was excellent with complete remission after a mean follow of 39 months in 7 cases (2years-9years)., Conclusion: The diagnosis of breast cancer in pregnant women is often delayed because of physiological changes of pregnancy and the young age which explain the poor prognosis of this entity. The prognosis was excellent in our series compared to the literature.

Pure squamous cell carcinoma (SCC) of gallbladder is a very rare tumour and is responsible for only 3% of the malignant neoplasm of this organ. We report a case of SCC of gallbladder in a 58-year-old woman. Through this new observation, we propose to study the clinicopathologic features, pathogeny and treatment of this rare entity.

Primary myoepithelial carcinoma (MC) of the lung is exceedingly rare. We report here, to the best of our knowledge, the first pediatric case having primitive pulmonary MC. The originality of our case was the disappearance of the pulmonary opacity spontaneously, without any treatment. The difficulties in our case were the diagnosis of this rare entity and its subsequent treatment. In fact, given the rarity of these tumors, recommendations regarding chemotherapy or radiation, were difficult to formulate.

Posterior reversible encephalopathy syndrome (PRES) is an acute central nervous system disorder characterized by reversible brain vasogenic edema. We report here a new case of a nine-year-old boy with B-cell acute lymphoblastic leukemia (B-ALL) who developed PRES secondary to induction chemotherapy including dexamethasone (dexamethasone®), vincristine (oncovin(®)), daunorubicin (adriblastine(®)) and intrathecal injection. Cerebral magnetic resonance imaging (MRI) showed high signal intensity on T2 at cortical and sub cortical region of parieto-frontal and parieto-occipital lobes. The patient was put under sodium valproate (depakine(®)) and we decided to continue dexamethasone (dexamethasone(®)) and daunorubicin (adriblastine(®)) injection. The MRI, after four weeks, was normal. So, we resumed vincristine (oncovin(®)) and we started L-asparaginase injections. Then, the outcome was favorable. The treatment of PRES is based on the withdrawal of the triggering factor to avoid the risk of irreversible lesions. But, due to the severity of leukemia the discontinuation of chemotherapy is difficult because of the risk of disease progression.

Sagittal sinus thrombosis (SST) induced by chemotherapy is exceptional. We describe here a new case following the fourth cure of chemotherapy based on cisplatin, bleomycin and etoposide in a 16-year-old patient with no obvious risk factors. Through this uncommon case which forms part of cerebral venous sinus thrombosis (CVST), we propose to study the pathophysiology, the diagnosis and the management of this entity. The exclusion of the other causes of CVST is important not only for the therapeutic implication but also for the prognosis. Then, accurate documentation of each case induced by chemotherapy is needed to further understanding.

Background: Arrhythmia induced by etoposide is exceedingly rare. There are only a very few individual case histories of arrhythmias during etoposide infusion, including atrial fibrillation., Objective: Through this uncommon case, we propose to study the pathophysiology, the diagnosis and the management of this entity., Case Report: We report a case of a 57-year-old man, without cardiac history, followed for endocrine tumor of the pancreas with liver metastases who had presented atrial fibrillation (AF) after etoposide infusion., Conclusion: It is important to consider cardiac monitoring during etoposide infusion in patients with known cardiac disease or at high risk of cardiac complications.