[Hydatid cyst of the scalp]. / Kyste hydatique du cuir chevelu.

INTRODUCTION: Hydatid disease is a broad-based anthropozoonosis common to humans and several mammal species. The disease results from the development of Echinococcus granulosis in the body. CASE REPORT: We report a new case involving a 58-year old woman hospitalized for a subcutaneous mass in the scalp with no local inflammatory signs. Radiological examination was consistent with a subcutaneous cyst. Complete surgical resection of the mass was performed. Histopathological examination demonstrated hydatid cyst. DISCUSSION: Subcutaneous localization of hydatid cyst is uncommon even in endemic zone. Diagnosis is suggested by ultrasonography and confirmed by histology.