has characteristic has characteristic malignant epithelial tumor of ovary malignant ovarian serous tumor GARD:0025472 An invasive malignant neoplasm that arises from the ovary and is characterized by the presence of malignant epithelial cells that, in well differentiated tumors, resemble the epithelium of the fallopian tube or, in poorly differentiated tumors, show anaplastic features and marked nuclear atypia. It includes serous adenocarcinoma and serous adenocarcinofibroma. NCIT:C40025 MONDO:0024885 ovarian serous tumor, malignant MEDGEN:309396 malignant ovarian serous tumor UMLS:C1518234 ovarian serous tumor neoplastic, malignant