extension. Stage III - Tumour involving one or both ovaries with implants outside pelvis. Stage IV- Tumour involving one or both ovaries with presence of distant metastasis. Epidemiology 25% of ovarian tumors and 40% of ovarian cancers are serous tumors. Family history and nulliparity have been identified as risk factors for the disease. Uterine serous carcinoma Uterine serous carcinoma is an uncommon form of endometrial cancer that typically arises in postmenopausal women. It is typically diagnosed on endometrial biopsy, prompted by post-menopausal bleeding. Unlike the more common low-grade endometrioid endometrial adenocarcinoma, uterine serous carcinoma does not develop from endometrial hyperplasia and is not hormone-sensitive. It arises in the setting of endometrial atrophy and is classified as a type II endometrial cancer. References External links Gynaecological cancer