Unique journey of a fallen gall stone leading to gastrointestinal, biliary and intraperitoneal haemorrhage: the first case in the literature.

Here, we report the case of gastrointestinal haemorrhage because of the erosion of the gastroduodenal artery that was caused by a fallen gallstone, which was trapped in the neck of the gallbladder prior to its destructive effect to gallbladder and duodenum walls, which were the unusual features of this case. The trapped gallstone can be exteriorised via three anatomical routes: (1) in the form of haemobilia via the common bile duct, (2) in the form of gastrointestinal haemorrhage via a cholecystoduodenal fistula and (3) intraperitoneal bleeding entrapped within a conglomerate of neighbouring organs around the fistula (3).