Hydatid cyst is a parasitic infection caused by the larval stage of the Echinococcus tapeworm[1]. Echinococcus is transmitted to humans from animals, and humans are accidental hosts[1]. It is endemic in many parts of the world, and the World Health Organization estimates its prevalence at 50/100,000 in endemic regions.

Echinococcus is primarily observed in the liver and lungs but can be seen in any organ. Spleen, kidney, pancreas, intraperitoneal space, heart, incision scar, retroperitoneal space, head and neck, chest wall, brain, musculoskeletal and soft tissue, breast, and axillary space are some of them[2], [3].

Due to the numerous imaging features in each location, diagnosis can sometimes be difficult and even confused with malignancies.

In this article, we present our pediatric cyst hydatid cases seen in many locations to emphasize that cyst hydatid should be considered in the differential diagnosis of cystic lesions in different organs.