Definition

A term used to describe certain types of cancer that form in the non-glandular tissues of the endometrium (the lining of the uterus) or ovary. Examples of non-endometrioid cancer of the endometrium or ovary include serous, clear cell, mixed, and mucinous carcinomas. Non-endometrioid cancers tend to grow and spread quickly and have a poor prognosis (chance of recovery).