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

**Semantic type:** Neoplastic Process

**Definition:** A low grade ovarian epithelial neoplasm characterized by the presence of atypical neoplastic serous and mucinous cells. Microinvasion of the ovarian stroma is present.