endometrioid tumor of ovary

The histological structure of ovarian endometrioid tumors is similar to endometrial epithelium and/or stroma, which can come from ectopic endometrium and ovarian surface epithelium. In the past, the understanding of this kind of tumor was insufficient and the diagnosis was few. 1964 International Society of Obstetrics and Gynecology officially named, 1973 International Ovarian Tumor Histological Classification officially divided into benign, cross.