Hydatid Cyst in Brachioradialis Muscle of the Arm (Report of One Case)

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Abstract
Primary hydatid cyst of the muscle is so rare that it would not usually be considered in the differential diagnosis of soft tissue tumor even in endemic regions. A 40 year old male presented with a swelling and increscent pain following a pressure mass in the right arm. Diagnosis is suspected according to clinical symptoms and pathognomic but rare imaging findings of hydatid disease including "water lily sign".

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