Spontaneous fistulization of hepatic hydatid cyst into the duodenum: an exceptional complication.

Hydatid disease is a worldwide zoonosis and is localized in the liver in most cases. Its complications are numerous and include those related to the compression of adjacent viscera, infection of the cyst's contents or perforation of the cyst. Spontaneous rupture of the hepatic hydatid cyst into the duodenum is an extremely rare complication. The communication is, typically, not discovered until surgery. We present two cases of perforation of a liver cyst into the duodenum. One of them was diagnosed pre-operatively by a barium study. The surgical treatment of the lesion and its complications was complex but successful in both cases.