An unusual localization of hydatid cyst in a patient with endometrial cancer

Hydatid disease is a widespread parasitic infection caused by tapeworm Echinococcus and it affects mainly the liver, but other organs such as pelvic organs could be involved very rare. Here we report a case of hydatid cyst with involvement of oviduct in a woman with endometrial cancer. It was misdiagnosed as a multicystic right ovarian mass before surgery and by microscopic study it was shown as a primary degenerated hydatid cyst which was also unusual. Although pelvic echinococcal cysts rarely occur, the gynecologists should be consider, and the possibility of a hydatid cyst when they find a pelvic cystic mass, especially in areas where the disease is endemic.