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Glypican 3 (GPC3) is a cell membrane protein and plays a dual role, as a tumor suppressor and oncogene, depending on its structure. It is known to regulate the Wnt/β-catenin signaling pathway and affect cell growth and proliferation. β-catenin plays a major oncogenic role in progression...
Salivary duct carcinoma (SDC) is a high-grade adenocarcinoma resembling breast ductal carcinoma. It accounts for ~10% of malignant tumors of the salivary glands. Most cases show expression of CK7 and androgen receptor. PAX-8 is a transcription factor, with expression reported in renal,...
Androgen receptor (AR) expression is a potential therapeutic target in breast cancer (BC) as it is frequently expressed in the luminal A and B subtypes and in approximately one third of basal-like cancers. As AR-positive BC displays a distinct biological...
Upper tract urothelial carcinomas (UTUCs) are a rare and unique subset of urothelial carcinoma (UC). Patients with UTUC may qualify for treatment with immune checkpoint inhibitors if their tumor cells express programmed death ligand-1 (PD-L1). While...
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Choledochal cyst (CC) is a cystic disease predominantly involving the extrahepatic biliary tree. Biliary atresia (BA), another disorder of the extrahepatic biliary tree, is sometimes considered to be in the same spectrum as pediatric CC. Recently, the absence and/or the structural...
Mucinous adenocarcinoma (MAC) is conventionally diagnosed by WHO definition when the extracellular mucin is >50% of the tumor area, while tumors with <50% mucin are designated as having a mucinous component. The study is aimed at analyzing the clinicopathologic characteristics, mutation...
Enteritis cystica profunda (ECP) is an uncommon benign condition arising after mucosal damage. We describe 2 cases of small intestinal adenocarcinomas associated with ECP at the distal ileum, one in a background of active Crohn ileitis (case 1), the other 22 years after pelvic radiation...
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