Left Compartmentectomy for Adult-Type Granulosa Tumor of the Retroperitoneum: A Case Report and Review of the Literature.

Granulosa tumors are rare tumors arising from the cells of the sexual cord and stroma of the ovary. They account for 5% of ovarian cancers and 70% of stromal cancers of the sex cords. Retroperitoneal tumors (RPTs) are also rare and develop in the retroperitoneal and subperitoneal space.