Özet:

Hydatid disease generally caused by Echinococcus granulosus often represented as a slow growing cystic mass; Liver or lung are most commonly affected. However hydatid disease may also affect the other parts of the body such as the brain, heart, spleen, peritoneal cavity, or bone rarely. Hydatid cysts of the musculoskeletal system are extremely rare. Since the intramuscular hydatid cyst seems like a soft-tissue tumour on clinical examination, the preoperative radiological diagnosis is very important for the identification of the lesion before decision to surgery. We report a rare case of primary hydatidosis of a 32-year-old man represented as a slow-growing and painful lump on the adductor region of the left upper thigh. A soft, slightly tender, fixed mass, 10 cm., 10 cm. in size was examined and plain radiographs showed only soft-tissue swelling. MRI (magnetic resonaunce imaging)demonstrated a benign soft tissue tumour probably a lipoma. The mass was excised surgically. Sectioning showed a cystic cavity, which contained clear fluid. The residual cavity was then irrigated with hypertonic saline solution. After the day surgery, abdominal ultrasonography (USG) and thoracal and abdominal computed tomography and cerebral MRI was performed and all were found to be normal. As far as we know, in rare primary muscle hydatidosis cases in the literature, this is the first case representing the involvement of the adductor region of the upper thigh. As a conclusion; in endemic regions for hydatidosis, a mass in any part of the body should be considered a hydatid cyst until proven otherwise.

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