Definition

A type of cancer that usually forms in the glandular tissue of the endometrium (the lining of the uterus) or ovary but may also form in the fallopian tube, cervix, and vagina. The cancer cells tend to look similar to normal gland cells when viewed under a microscope. Endometrioid adenocarcinoma usually grows and spreads slowly, can be treated, and has a good prognosis (chance of recovery). It is the most common type of endometrial cancer. Also called endometrioid cancer.