Musculoskeletal hydatid masquerading as malignancy: A diagnostic dilemma

Hydatid cyst in the iliac bone is rare and is usually an incidental finding at any site other than liver and lung. It is a zoonotic disease which is due to infection with larval stage of Echinococcus granulosus. The disease is chronic, and cysts can be lodged in different organs. It has cosmopolitan distribution and impacts on health and economic indices in many countries throughout the world. Therefore, accurate information on the distribution of the disease is first step for the control and prevention. We present an unusual case of hydatid cyst found in the right iliac bone extending into the gluteal region.