Intraductal carcinoma of prostate has been previously described in radical prostatectomies. It's rarely encountered in needle biopsies in the absence of infiltrative carcinoma. But, both histogenesis and nomenclature of the lesion is still controversial. Among the pure intraductal carcinoma of prostate cases, a different solid patern was described with smaller nuclei at the center of the ducts. However, there is a lack of information about the association of those cases with acinar prostate adenocarcinoma. Herein, we describe a case of acinar adenocarcinoma with predominant non-neuroendocrine TTF-1 positive small cell intraductal component.
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http://dx.doi.org/10.5146/tjpath.2014.01253 | DOI Listing |
J Dig Dis
January 2025
Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
Int J Cancer
December 2024
Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, Québec, Canada.
Survival differences in rare histological prostate cancer (PCa) subtypes relative to age-matched population-based controls are unknown. Within Surveillance, Epidemiology, and End Results database (2004-2020), newly diagnosed (2004-2015) PCa patients were identified. Relying on the Social Security Administration Life Tables (2004-2020) with 5 years of follow-up, age-matched population-based controls (Monte Carlo simulation) were simulated for each patient.
View Article and Find Full Text PDFJCI Insight
December 2024
Department of Physiology and Pharmacology, University of Western Ontario, London, Canada.
Enhancer of Zeste Homologue 2 (EZH2) is part of the Polycomb Repressor Complex 2, which promotes trimethylation of lysine 27 on histone 3 (H3K27me3) and genes repression. EZH2 is overexpressed in many cancers and studies in mice attributed both pro-oncogenic and tumor suppressive functions to EZH2 in pancreatic ductal adenocarcinoma (PDAC). EZH2 deletion enhances de novo KRAS-driven neoplasia following pancreatic injury, while increased EZH2 expression in PDAC patients is correlated to poor prognosis, suggesting a context-dependant effect for EZH2 in PDAC progression.
View Article and Find Full Text PDFFront Neurol
December 2024
Department of Internal Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Background: Lambert-Eaton myasthenic syndrome (LEMS) is an autoimmune disorder of the presynaptic neuromuscular junction associated with antibody mediated dysfunction of voltage-gated calcium channels (VGCCs). LEMS can exist as a paraneoplastic syndrome, paraneoplastic-LEMS (P-LEMS), when associated with tumors, most commonly, small cell lung carcinoma (SCLC) or as a non-paraneoplastic condition (NP-LEMS) when no malignancies are detected.
Methods: A retrospective chart review was conducted in 3 tertiary hospitals in Saudi Arabia for patients diagnosed with LEMS between January 2010 and January 2020.
Pathol Res Pract
December 2024
Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, 1300 York Ave, New York, NY 10065, USA; Englander Institute for Precision Medicine, Weill Cornell Medicine, 413 East 69th Street, New York, NY 10021, USA. Electronic address:
Pancreatic acinar cell carcinoma (PACC) is a rare pancreatic tumor with a heterogeneous clinical course and, except for radical surgery, limited treatment options. We present a comprehensive study encompassing whole-genome and RNA sequencing of 7 tumor samples from 3 metastatic PACC patients to further delineate its genomic landscape and potential therapeutic implications. Our findings reveal distinct signatures of homologous recombination deficiency (HRD) in patients harboring pathogenic germline BRCA1/2 and FANCL mutations, demonstrating favorable responses to poly (ADP-ribose) polymerase 1 (PARP) inhibitors with prolonged disease-free intervals.
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