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.roneverhart.com/Western-Digital-Ultrastar-DC-HC570-WUH722222ALE6L4-0F48155-22TB-7-2K-RPM-SATA-6Gb-s-512e-SE-3-5in-Refurbished-HDD/