Mohammad Abd-El-Same'e El-Kattan, Eman Saeed, Mahmoud Ahmed Khattab, Fatma Maksoud, Maha Emad Eldein, Nada Elsayed Abdel-Roaf, Walaa Awad, Ahmed Elshatory
{"title":"Gabapentin-Induced Sub-Chronic Neurotoxicity in Rats and the Protective Role of Alpha-Tocopherol.","authors":"Mohammad Abd-El-Same'e El-Kattan, Eman Saeed, Mahmoud Ahmed Khattab, Fatma Maksoud, Maha Emad Eldein, Nada Elsayed Abdel-Roaf, Walaa Awad, Ahmed Elshatory","doi":"10.5146/tjpath.2025.14236","DOIUrl":"https://doi.org/10.5146/tjpath.2025.14236","url":null,"abstract":"<p><strong>Objective: </strong>The past ten years have seen an increase in gabapentin (GBP) overuse and abuse in Egypt after pregabalin scheduling. Numerous studies have demonstrated the detrimental effects of pregabalin; nonetheless, GBP`s effects are minimal. The objective of this investigation is to study GBP-induced neurotoxicity in rats and the protective benefits of alpha-tocopherol (vitamin E `Vit E`).</p><p><strong>Material and methods: </strong>Forty (40) adult male albino rats were randomly split into four groups: (10 rats each): Group I, which was subdivided into group Ia (5 rats), received a regular diet as a negative control; group Ib (5 rats) received corn oil as a positive control; group II received alpha-tocopherol; group III (GBP misuse); and group IV received GBP + alpha-tocopherol. The corresponding medicines were administered to every rat for fifty days. Neurobehavioral tests were performed on the day of scarification. Hippocampal tissues were collected for immunohistochemical and histological analysis.</p><p><strong>Results: </strong>Weight gain rose considerably by the end of the research in the drug-treated groups. In neurobehavioral tests, controls performed better and had higher locomotor indices. The group that misused GBP showed more deteriorated cells and more negative effects on hippocampal tissues. These histological alterations dramatically decreased with alpha-tocopherol therapy.</p><p><strong>Conclusion: </strong>GBP in high doses had neurotoxic effects, disrupted hippocampal tissues, and increased the number of degenerated cells. Alpha-tocopherol treatment significantly attenuated the deleterious effects induced by GBP.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144733805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diagnostic Challenge of a Rare Cause of Anemia After Kidney Transplant: Seronegative Parvovirus B19 Detected by PCR and Bone Marrow Findings.","authors":"Derya Demir, Volkan Karakus, Ayca Inci, Muammer Avci, Nazan Ozsan, Mine Hekimgil","doi":"10.5146/tjpath.2025.14331","DOIUrl":"https://doi.org/10.5146/tjpath.2025.14331","url":null,"abstract":"<p><strong>Objective: </strong>Anemia is a common complication in kidney transplant patients, often attributed to viral infections. Our objective was to describe a rare case of severe anemia secondary to Parvovirus B19 infection in a kidney transplant recipient, highlighting diagnostic and therapeutic challenges in the immunosuppressed setting.</p><p><strong>Case report: </strong>We present a 43-year-old woman with end-stage renal disease secondary to polycystic kidney disease who received a living-kidney transplant from her husband. Seven months after transplantation, she presented with severe anemia, fatigue, and palpitations. Laboratory findings demonstrated severe normocytic, normochromic anemia (Hb: 5.8 g/dL). Parvovirus B19 serology tests were negative twice, while PCR testing revealed a significant viral load (25×10⁶ copies/mL). Bone marrow biopsy findings included giant proerythroblasts with characteristic viral nuclear inclusions. The patient received intravenous immunoglobulin (IVIG, 100 mg/kg/day for 4 days), and mycophenolate mofetil was discontinued. After therapy, hemoglobin levels and viral load improved significantly, leading to successful resolution of anemia.</p><p><strong>Conclusion: </strong>This case emphasizes the importance of considering Parvovirus B19 in the differential diagnosis of anemia in transplant patients. In immunosuppressed individuals, PCR and bone marrow analysis can be essential for diagnosis, especially when serologic tests are inconclusive. Timely intervention can lead to favorable outcomes.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144733804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"When Cysts Strike: A Unique Case of Isolated Renal Hydatid Disease in a Child.","authors":"Nikhil Kumar, Sandip Kumar Rahul, Harish Kumar Bohra, Vimal Singh Munda, Varsha Vijayan, Nidhi Priya Allie-Barla","doi":"10.5146/tjpath.2025.13871","DOIUrl":"https://doi.org/10.5146/tjpath.2025.13871","url":null,"abstract":"<p><p>Echinococcus granulosus, also known as the 10.5146/tjpath.2024.13488dog tapeworm, causes echinococcosis or hydatid disease in humans. It is an anthropozoonotic and non-endemic disease. Hydatid cysts are most commonly found in the liver and lungs, but can occur in any other organ, including the brain, kidneys, bones, and peritoneal cavity. Isolated renal hydatidosis is an extremely rare condition, accounting for only 2-4% of all cases of hydatidosis, with its occurrence in children being even rarer. We are reporting a rare case of isolated renal hydatidosis in a 12-year-old boy.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143651120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bone Marrow Necrosis After Curative Allogeneic Hematopoietic Stem Cell Transplant Associated with Deep Diving.","authors":"Hajdhica Thanasi, Daniele Avenoso, Liron Barnea Slonim","doi":"10.5146/tjpath.2024.13488","DOIUrl":"https://doi.org/10.5146/tjpath.2024.13488","url":null,"abstract":"<p><p>Bone marrow necrosis, albeit an infrequent finding, is usually associated with highly proliferative malignant disorders, such as leukemia, lymphoma, or sickle cell anemia, solid tumor metastasis, and infections. It is also a typical finding in Caisson disease and in divers that developed decompression illness. Herein we report a case of bone marrow necrosis post deep diving in a bone marrow transplant recipient.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143650430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of the Effectiveness of an Algorithm as an Auxiliary Method in Intraoperative Consultations of Central Nervous System Tumors.","authors":"Emel Cakir, Ismail Saygin, Ayten Livaoglu, Gizem Teoman, Zeynep Sagnak Yilmaz, Arife Cicek Malat, Muserref Muge Ustaoglu","doi":"10.5146/tjpath.2024.13494","DOIUrl":"10.5146/tjpath.2024.13494","url":null,"abstract":"<p><strong>Objective: </strong>One of the most difficult areas in a surgical pathology practice is intraoperative consultation. In a previous study, we proposed an algorithm that provides a systematic approach to intraoperative consultation for central nervous system tumors. Our aim was to demonstrate the effectiveness of this algorithm.</p><p><strong>Material and methods: </strong>102 cases were selected from intraoperative consultation procedures performed at our institution between 2012 and 2020. The algorithm was tested by five observers. The observers examined the smears and frozen sections without the algorithm, and then with the algorithm.</p><p><strong>Results: </strong>The percentage change in the rate of correct diagnoses made by the four observers (O) increased after using the algorithm (O2: 8%, O3: 5%, O4: 8% and O5: 13%), but decreased for only one observer (O1) (5%). The most common error made by the four observers was `grading of glial tumors` (O1: 40%; O2: 23%; O4: 40% and O5: 27.5%), and this group of errors was mostly corrected by using the algorithm (O1: 33%; O2: 3.8%; O4: 23% and O5: 10%). For two observers (O2 and O5), a statistically significant change in diagnostic levels was observed after using the algorithm (p=0.024 and p=0.040; respectively). In addition, thanks to the use of the algorithm, a high degree of agreement was found between the observers` diagnoses (77.7%, p < 0.001).</p><p><strong>Conclusion: </strong>In the intraoperative consultation of central nervous system lesions, algorithms can help to increase the accuracy of the diagnosis and reduce interobserver variability. This study demonstrates that an algorithmic approach is an effective method for pathologists in intraoperative consultation procedures.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":"9-15"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11831962/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142298145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Solitary Rectal Ulcer Syndrome - A Rare Entity in the Pediatric Population.","authors":"Megha Sawhney, Jyotsna Madan, Devajit Nath, Akanksha Bhatia, Neema Tiwari, Umesh Shukla","doi":"10.5146/tjpath.2025.13667","DOIUrl":"10.5146/tjpath.2025.13667","url":null,"abstract":"<p><strong>Objective: </strong>To study and correlate the clinicopathological findings of Solitary Rectal Ulcer Syndrome (SRUS) in 10 pediatric patients.</p><p><strong>Material and methods: </strong>This study is a retrospective study of patients from January 2017 to June 2024. The clinical records were reviewed for details of the clinical presentation, colonoscopic findings, associated local and systemic diseases, and other investigations.</p><p><strong>Results: </strong>The mean age of presentation was 10±1 years, and the youngest child was 6 years old. The most common clinical presentation was rectal bleeding and a single ulcer on endoscopy. Histological findings included crypt distortion, crypt branching, and fibromuscular obliteration of the lamina propria. Immunohistochemistry (IHC) for Smooth Muscle Actin (SMA) and special staining with Masson Trichrome (MT) were used to highlight fibromuscular areas whenever in doubt.</p><p><strong>Conclusion: </strong>The pathogenesis of SRUS is not well understood. It may be associated with chronic mucosal and hypoperfusion-induced ischemic injury to the rectal mucosa due to trauma or increased rectal pressure during straining. Solitary rectal ulcer is a misnomer, as the patient may present with multiple or no ulcers. Endoscopy and histopathology help to diagnose SRUS. Timely and correct diagnosis reduces the morbidity associated with this entity.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":"16-20"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11831963/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143013757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Large Language Models as Tool for Pathology Report Data Extraction: Comment.","authors":"Hinpetch Daungsupawong, Viroj Wiwanitkit","doi":"10.5146/tjpath.2024.13439","DOIUrl":"10.5146/tjpath.2024.13439","url":null,"abstract":"","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":"70"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12206393/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141155427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diagnostic Utility of NKX3.1 in Mesenchymal Chondrosarcoma on Needle Biopsy: A Case Report of a Supraclavicular Soft Tissue Mass with Literature Review.","authors":"Sunil Pasricha, Divya Bansal, Himanshu Rohela, Anila Sharma, Rakesh Oberoi, Vikas Reddy, Ullas Batra, Anurag Mehta","doi":"10.5146/tjpath.2025.13752","DOIUrl":"10.5146/tjpath.2025.13752","url":null,"abstract":"<p><p>We report a case of young female in her 20s who presented with a supraclavicular soft tissue mass. Diagnostic biopsy showed a malignant round cell tumor with areas of spindling and hyalinized stroma. The utilization of an immunohistochemistry panel revealed positive results for NKX2.2 and CD99 expression. This positivity led to the consideration of a differential diagnosis of Ewing sarcoma, EWSR1::NFATC2- rearranged sarcoma, and mesenchymal chondrosarcoma for further assessment. On further immunohistochemistry with NKX3.1 and EWSR1 break-apart fluorescent in situ hybridization analysis, a diagnosis of mesenchymal chondrosarcoma was rendered which was later on confirmed with biphasic histology on excision specimen. NKX3.1 is a useful immunohistochemistry marker to resolve the differentials when dealing with undifferentiated small round cell sarcoma of bone and soft tissue, especially on a needle biopsy.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144040706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Basharat Mubeen, Malini Eapen, S Sudhindran, Nikhil Krishna Haridas
{"title":"Mixed Neuroendocrine Non-Neuroendocrine Tumor (MINEN) of the Liver: Report of Two Cases and Review of the Literature.","authors":"Basharat Mubeen, Malini Eapen, S Sudhindran, Nikhil Krishna Haridas","doi":"10.5146/tjpath.2024.13492","DOIUrl":"10.5146/tjpath.2024.13492","url":null,"abstract":"<p><strong>Objective: </strong>To highlight two cases mixed neuroendocrine non-neuroendocrine tumors (MINEN) of the liver and to review the literature till date. To present two cases of MINEN of the liver diagnosed in our centre with clinical & diagnostic workup, the treatment modalities, and follow up. Extensive review of the literature and compilation of the presentation and treatment modalities used in those cases.</p><p><strong>Case reports: </strong>Thirty-three cases of MINEN of the liver have been reported till date including ours. Our cases presented as incidental masses in liver during workup for other symptoms. AFP levels were normal in both cases but PIVKA (Protein induced by vitamin K absence) levels were increased. Resection was done in one of the cases while the other patient had to undergo transplantation. A diagnosis of MINEN was made on H&E, and confirmed on IHC. One patient was unfit for systemic chemotherapy whereas the other patient received cisplastin and etoposide based chemotherapy. Both patients developed metastasis on follow up but are still alive after 12-15 months.</p><p><strong>Conclusion: </strong>MINEN is an uncommon tumor of the liver with a poor prognosis as shown by the few studies available. Recurrence and distant metastases are often described even after complete resection and the course is fatal. The role of adjuvant chemotherapy following surgical resection is not fully elucidated. Mean survival in the cases reported ranged from 1 month to 33 months. However, no significant differences were seen in the clinicopathologic profile of the cases described so far. Further multiinstitutional studies and follow up will help to further characterize this subtype for appropriate treatment.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":" ","pages":"21-29"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11831964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142298146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prognostic Significance of Regulatory CD25+ T Cells in Bladder Cancer: An Immunohistochemical Analysis.","authors":"Sarra Ben Rejeb, Nadia Kouki, Hassen Khouni, Rami Boulma, Khadija Bellil","doi":"10.5146/tjpath.2025.13848","DOIUrl":"10.5146/tjpath.2025.13848","url":null,"abstract":"<p><strong>Objective: </strong>Tumor-infiltrating lymphocytes (TILs) have been shown to predict outcomes in several cancers. This study aimed to evaluate the density and location of regulatory T cells (Tregs) using immunohistochemistry (IHC) in urothelial carcinomas (UC) of the bladder and to assess their prognostic value.</p><p><strong>Material and methods: </strong>We have retrospectively collected all cases of UC of the bladder infiltrating at least the lamina propria, diagnosed in our pathology department between 2011-2021. Specimens were stained for CD3 and CD25. TILs were assessed separately in the tumor core and the stroma. The median TIL count was used as a cut-off to classify cases into low- or high-density groups.</p><p><strong>Results: </strong>A total of 30 cases were included in the study. The median age of the patients was 65 years, with a male-to-female ratio of 9:1. The distribution of TILs was heterogeneous across locations among patients. CD3+ (p=0.035) and CD25+ (p=0.051) TILs were predominantly observed in the stroma. The density of CD25+ and CD3+ TILs were not associated with clinicopathological features. Multivariate analysis revealed that advanced histological stage and a high density of regulatory CD25+ T lymphocytes were predictive factors of poorer event-free survival (respectively p=0.041 and p=0.052).</p><p><strong>Conclusion: </strong>Regulatory T cells appear to predict worse survival outcomes. Further studies are needed to confirm their prognostic value.</p>","PeriodicalId":45415,"journal":{"name":"Turkish Journal of Pathology","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}