label: carcinoma of gallbladder and extrahepatic biliary tract
label_lc: carcinoma of gallbladder and extrahepatic biliary tract
description: "Carcinoma of the gallbladder (GBC) is the most common and aggressive form of biliary tract cancer (BTC) usually arising in the fundus of the gallbladder, rapidly metastasizing to lymph nodes and distant sites."