Borderline Ovarian Serous Tumor/Atypical Proliferative Ovarian Serous Tumor with Microinvasion

**Semantic type:** Neoplastic Process

**Definition:** A low grade ovarian epithelial neoplasm characterized by the presence of neoplastic serous epithelial cells, atypia, and microinvasion of the ovarian stroma.

**Synonyms:** - Borderline Ovarian Serous Neoplasm with Microinvasion - Borderline Ovarian Serous Tumor with Microinvasion