Sarcomatoid or anaplastic carcinomas arising within epithelial ovarian neoplasms are rare. particularly within serous tumors of the ovary. and carry a poor prognosis. Here we present the case of a patient initially diagnosed with low grade serous ovarian carcinoma arising within a serous borderline tumor (atypical proliferative serous tumor). https://www.footballmediaservices.com/product-category/die-grinder-accessories/