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[Echinococcosis cyst in the pelvic cavity. Presentation of a case].

The incidence of echinococcal cysts and their percentage occurrence in different human organs is reported. A case of hydatid cyst localisation in the pelvic cavity is reported and the pathogenesis of this infrequent localisation discussed. The various hypotheses: haematogenous and fall into the peritoneal cavity are examined; then the diagnostic approach and conservative surgical therapy employed.