label: Gallbladder Carcinoma
label_lc: gallbladder carcinoma
description: A malignant tumor arising from the epithelium of the gallbladder. It is usually associated with the presence of gallstones. Clinical symptoms are not specific and usually present late in the course. Morphologically, most gallbladder carcinomas are adenocarcinomas; squamous cell carcinomas, adenosquamous carcinomas, signet ring carcinomas, and undifferentiated carcinomas can also occur.