Borderline Ovarian Mucinous Tumor/Atypical Proliferative Ovarian Mucinous Tumor

**Semantic type:** Neoplastic Process

**Definition:** A non-invasive neoplasm that arises from the ovary and is composed of gastrointestinal-type, mucin-containing epithelial cells. It shows greater cellular proliferation and cytologic atypia as compared to benign ovarian mucinous tumors.

**Synonyms:** - MBT/APMT