Caroli's disease associated with a gastric diverticulum.

Caroli's disease or communicating ectasia of the intrahepatic biliary tree is a rare disease with unknown aetiology. The coexistence of this along with the uncommon condition of a gastric diverticulum has never been reported before. A deficiency in the fibromuscular matrix of both the bile ducts and the gastric wall may explain why these two pathologies may coexist in a single patient.