Hydatid disease is an infectious disease caused by the cestode Echinococcus. Echinococcus granulosus is the most common of the Echinococcus species affecting human beings.1 Hydatid cysts may affect any organ and tissue in the body, in particular the liver and lungs. Musculoskeletal or soft tissue hydatidosis accounts for about 0.5–5% of all echinococcal infections in endemic regions, and is almost always secondary to the hepatic or pulmonary disease.2,3 Primary hydatid cysts in the skeletal muscles are a very rare presentation of hydatidosis (3% of echinococcal infections).
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