Monarch Disease Ontology id MONDO_0002880 (ovarian adenosarcoma) can be described as follows. A biphasic neoplasm that arises from the ovary and is characterized by the presence of mullerian-type epithelial tissue in a mesenchymal sarcomatous stroma. The presence of a high grade sarcomatous component is associated with recurrences and metastases. Also known as: adenosarcoma of ovary, ovarian Mullerian adenosarcoma, ovarian Müllerian adenosarcoma, ovarian mesodermal adenosarcoma, ovarian mullerian adenosarcoma, ovary adenosarcoma.