[Double hydatid cyst of the liver, one of them with a fistula and causing stenosis of the pyloric canal associated with calculous cholecystitis].

A case of double hydatid cyst of the liver (one fistulised into the pyloric canal where it had caused stenosis) and its association with calculous cholecystitis is reported. The therapy chosen to treat this rare phenomenon had a very satisfactory outcome in view of the complexity of the case given the need to perform several operations in contemporary (enucleation of the cyst, gastric resection and cholecystectomy) and the age of the patient.