ovarian neoplasm malignant ovarian neoplasm http://purl.obolibrary.org/obo/NCIT_C7431 A primary or metastatic malignant neoplasm involving the ovary. Most primary malignant ovarian neoplasms are either carcinomas (serous, mucinous, or endometrioid adenocarcinomas) or malignant germ cell tumors. Metastatic malignant neoplasms to the ovary include carcinomas, lymphomas, and melanomas. malignant neoplasm of ovary malignant neoplasm of the ovary malignant ovarian neoplasms