Case Report: A rare case of gallbladder carcinosarcoma with osteosarcomatous differentiation.

ABSTRACT: Gallbladder carcinosarcoma (GBCS) is indeed an exceptionally rare and aggressive malignancy, accounting for less than 1% of all primary gallbladder tumors. This tumor is characterized by the presence of both carcinomatous (epithelial) and sarcomatous (mesenchymal) components, making it a unique and diagnostically challenging entity. Herein, we report a case of a 71-year-old female patient who presented with a one-year history of vague epigastric pain. AFP levels were markedly elevated. Preoperative imaging revealed gallbladder enlargement with heterogeneous contrast enhancement, raising suspicion of malignancy. The patient subsequently underwent radical cholecystectomy, and postoperative histopathological examination confirmed the diagnosis of GBCS with osteosarcomatous differentiation. Th

SUBMITTER: Shi J 

PROVIDER: S-EPMC12675190 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature