2017 Volume 31 Issue 5 Pages 831-837
A woman in her 70s presented with epigastralgia, and preoperative studies pointed towards gallbladder cancer derived from pancreaticobiliary maljunction. We resected the primary tumor, and pathological examination revealed that it was a carcinosarcoma. A hepatic metastasis was detected 6 months after resection, and she was administered chemotherapy using tegafur-gimeracil-oteracil potassium and consequent gemcitabine. Though a singular hepatic metastasis had been observed, any other metastatic lesions did not appear for 10 months. Therefore, we resected the metastatic lesion. After resection, she was administered adjuvant chemotherapy using gemcitabine, and currently lives without recurrence. Carcinosarcoma of the gallbladder is associated with frequent recurrence and poor prognosis. A standard therapeutic strategy has not been established for cases with recurrence. The present case suggests that resection is an effective strategy for treating recurrence of carcinosarcoma of the gallbladder.