Echinococcosis is an endemic zoonotic infection. The liver and the lung are the most affected organs, but muscle hydatidosis is very rare. We reported a case of a 39-yearold man, admitted for a cystic lesion of the right infraspinatus muscle, with radiological presumption of a hydatid cyst or a cystic tumor on computed tomography. Surgical excision of the cyst was performed. Preoperatively a diagnosis of an hydatid cyst was obvious. The pathologist confirmed the diagnosis.
Mohammed Massine El-Hammoumi, Mohamed Montasser, Ayouba El-Hassane, Omar Slaoui, Fayçal El-Oueriachi and El-Hassane Kabiri