Hydatid cyst of fallopian tube.

Echinococcosis is a common disease in the Middle East region and is in the differential diagnosis of cystic lesions in patients of this area. Liver and lung are commonly involved. Infection of unusual sites can cause difficulties in diagnosis. Here, we present a patient with echinococcal cyst of the fallopian tube. She had abdominal pain and a cystic lesion in adnexa was found by imaging. She underwent surgery and diagnosis of echinococcosis was established.