Incidence and Prognosis of Biliary Tract and Gallbladder Cancers in a Belgian Academic Hospital.

Background: Biliary tract and gallbladder cancers are rare tumors with a poor prognosis (except the ampulla type). The evolution of hepatobiliary cancer incidence varies widely around the world. According to the Belgian Cancer Registry, the number of hepatobiliary cancers has increased every year since 2004.