Suprahepatic gallbladder and right lobe anomaly of the liver in patients with biliary cancers.

The suprahepatic region is a rare ectopic location of the gallbladder. It usually combines with right lobe anomaly of the liver. Here we report two unusual cases of suprahepatic gallbladder with agenesis or hypogenesis of the right lobe of the liver and biliary cancer. A patient with a gallbladder tumor was admitted to our emergency room with acute cholecystitis and liver abscess. Imagining examinations and operation confirmed the suprahepatic position of gallbladder, agenesis of the right lobe, and dissemination of gallbladder cancer. In the patient with cholangiocarcinoma, CT scans and percutaneous transhepatic cholangiography documented the presence of a hilar tumor and hypogenesis of the right lobe. Both of these patients died from biliary tract cancer soon after operation.