2023 Volume 42 Issue 3 Pages 272-277
Synopsis: Carcinosarcoma is a rare malignant tumor comprising both carcinoma and sarcoma components. We describe a case in which serous tubal intraepithelial carcinoma (STIC) occurred along with omental carcinosarcoma. We ascertained that the STIC had become the primary lesion and metastasized to the omentum. The patient was a carrier of the BRCA2 pathological variant. After adjuvant chemotherapy with docetaxel and carboplatin, maintenance therapy with olaparib was administered. The patient has continued with the maintenance therapy with olaparib for 24 months, and has not had a recurrence. Olaparib may be effective in the treatment of BRCA pathological variant-positive carcinosarcoma.
