Benign Ovarian Endometrioid Tumor

**Semantic type:** Neoplastic Process

**Definition:** A non-metastasizing neoplasm that arises from the ovary and is characterized by the presence of glands or cysts lined by benign endometrial-type cells. It includes endometrioid adenofibroma, endometrioid cystadenofibroma, and endometrioid cystadenoma.