Primary Ovarian Hydatid Cyst: A Rare Encounter Causing Diagnostic Dilemma

Hydatid cyst is a disease caused by inoculation of larval form of Echinococcus granulosus in human organs. Human is the intermediate host whereas dog is the definitive host. The most common site of involvement is liver (60-70%) followed by lung (25%). Female reproductive system is the least common site of occurrence. Most of them are secondary to infection in liver or peritoneal rupture. Primary hydatid disease in ovary is very rare constituting less than 0.5% of all hydatid cases. We present a case of primary ovarian hydatid cyst in 48 years old female who was provisionally diagnosed as ovarian tumour; however, hydatid cyst of ovary was diagnosed incidentally during histopathological examination.