Ovarian cystic lesions Normal ovaries premenopausal Post-menopausal Functional cysts Follicular cyst Corpus luteum cyst Hemorrhagic ovarian cyst Other benign cystic and cyst-like lesions Endometrioma Polycystic ovary syndrome Ovarian hyperstimulation syndrome - Theca lutein cysts PID with tubo-ovarian abscess Benign cystic ovarian neoplasms Mature cystic teratoma Cystadenoma and cystadenofibroma Malignant cystic ovarian neoplasms Serous ovarian cystadenocarcinoma Mucinous ovarian cystadenocarcinoma Endometrioid ovarian carcinoma Cystic metastases to the ovaries Normal ovaries premenopausal The normal ovary contains over two million primary oocytes at birth, about 10 of which mature each menstrual cycle.