ENAapplication/xmlftp://primaryOK200GenomicsBAYLOR COLLEGE OF MEDICINEhttps://www.ebi.ac.uk/ena/browser/view/PRJNA280134Homo sapiensxref:EuropePMC:PMC4982376Adenocarcinomas arising in the complex environment of the ampulla of Vater constitute a histopathological heterogenous group, presumably originating from the different epithelial cellular constituents present at the site: pancreas, bile duct, and intestinal duodenum. These tumors have been described in many different ways: intra-ampullary, periampullary, intra-ampullary papillary-tubular neoplasm, ampullary-ductal, periampullary-duodenal, and ampullary-not otherwise specified. These varied classifications reflect the difficulty in classifying these tumors into specific groups. Only the tumors clearly localized in the bile duct or duodenum are identified as distal cholangiocarcinomas (CAC) or duodenal adenocarcinomas (DUOAC). The current classification is based on macroscopic features that may distinguish the epithelium of origin, microscopic features, clinicopathological criteria, histopathology and expression of differential markers. This classification... (for more see dbGaP study page.)ENANeoplasias, Benign, Malignant Neoplasm, determination, Malignancy, chemical analysis, Neoplasms, Neoplasm, Benign Neoplasm, Malignancies, Benign Neoplasms, assay, Cancers, Tumor, Malignant, Neoplasia, Cancer, Tumors, Malignant Neoplasms.Human, Modern., human being, Man (Taxonomy), Homo sapiens, man, Man, human, Modern ManfalseHomo sapiensIntegrated Genomic Analysis of Periampullary Tumors2025-09-242015-04-04PRJNA2801349606