[Unusual localizations of hydatid cysts. Apropos of 40 cases].

The authors report 40 hydatid cysts of rare localization selected during a period of 11 years and represent 10.75% on the whole of the hydatid cysts operated during the same period all localizations dumbfounded. The splenic localization is the more frequent with 15 cases, so 4.9%, it occupies the third place after the classic localizations (liver, lung). The soft tissue and the peritoneum come in fourth position with 9 cases so 2.42% in relation to the whole of the hydatid cysts. A last group constituted by very rare localizations of which the frequency varies from 0.27 to 1.34%. This group includes the renal, pancreatic and mammary localizations. In general the diagnosis set no problem. Clinically, it is the discovery of a cystic mass, of progressive evolution with conservation of the general status, which has evoked the diagnosis. Before the arrival of the echotomography, the confirmation of the diagnosis is particularly operative. Actually this investigation allows an easy pre-operative diagnosis. The treatment is only surgical and adapted to each case. The post-operative results are satisfying. They deplore one death for a second recurrent intra-peritoneal hydatidosis.