Rare occurrence of ovarian choriocarcinoma: ultrasound evaluation.

Choriocarcinoma of the ovary is a rare, highly malignant tumor showing malignant trophoblastic cells and produces human chorionic gonadotropins. It can be classified as gestational and non-gestational choriocarcinoma. Non-gestational choriocarcinoma is extremely rare. Treatment is Methotrexate-based chemotherapy for the gestational type. This case study is a rare case of ovarian choriocarcinoma managed by surgical resection, followed by methotrexate-based chemotherapy, and aimed to evaluate the ultrasound characteristics of ovarian choriocarcinoma and how to arrive at the diagnosis. In cases with an elevated serum beta-human chorionic gonadotropin (beta hCG), the finding of a highly vascularized adnexal mass on ultrasound evaluation should be underlined as a clue for suspecting choriocarcinoma, particularly if the female was young with no marriage history or history of sexual intercourse and also to be highly considered in married females with history of repeated abortions, molar pregnancy or uterine choriocarcinoma.