[Aerobilia as an initial sign of a cholecystoduodenal fistula--a case report].

An 82 year old female patient has the following medical history: repeated chemotherapy and radiation therapy for non-Hodgkin's lymphoma, a radiation-induced osteoblastic osteosarcoma and a longstanding cholecystolithiasis with sclero-atrophic cholecystitis. She appeared at the practice and complained about a dull food-dependent mesogastric and epigastric pain as well as a discrete scleral jaundice. Sonography and CT showed air inclusions in the bile ducts. Subsequently, a cholecystoduodenal fistula was found intraoperatively. The cause could be the long-existing cholecystolithiasis.