[Primary muscular echinococcosis. Apropos of 2 cases].

We report 2 cases of primary muscular hydatosis of the thigh in a 30-year-woman and a 75-year-man. The clinical picture was a benign soft tissue tumor. The ultrasound and C.T. scan exams confirmed the diagnosis and showed precisely the intimacy of the lesion with the femoral vascular axe. Preoperative diagnosis of this affection is mandatory in order to prevent any rupture of the cyst so as to avoid anaphylactic shock and local recurrence. Percystectomy is the treatment of choice for this lesion.