[Echinococcosis of the pelvic bone: four cases]

We report four cases of echinococcosis of the pelvic bone in 3 women and a man aged 30 to 55 years. Disease spread was wide, involving the entire hemipelvis in one case and the sacrum in another making surgical excision difficult. In two cases, computed tomography was highly contributive to diagnosis and assessment of local extension. We used surgical excision and hydrogen peroxide sterilization for the first two case. For the two last cases, we used albendazole in four 4-week cures at a 2-week interval before and after surgery. The clinical course was favorable to these two cases at 3 and 4 years. The albendazole-surgery combination appears to be the best therapeutic option.