Cholangiocarcinoma, also known as intrahepatic cholangiocarcinoma, is related to klatskin's tumor and gallbladder cancer, and has symptoms including abdominal pain, malaise and constipation. An important gene associated with Cholangiocarcinoma is MIR21 (MicroRNA 21), and among its related pathways/superpathways is ncRNAs involved in STAT3 signaling in hepatocellular carcinoma. The drugs Midazolam and Etomidate have been mentioned in the context of this disorder. Affiliated tissues include liver and small intestine, and related phenotypes are jaundice and biliary tract neoplasm