title: Carcinosarcoma of the Lesser Omentum: A Unique Case Report and Literature Review.
abstract: Carcinosarcoma is a rare tumor consisting of epithelial and mesenchymal components, both of which are histologically malignant. It usually runs an aggressive clinical course, with higher metastatic potential than other kinds of carcinomas or sarcomas.Here, we present an extremely uncommon case of carcinosarcoma occurred in the lesser omental bursa in a 65-year-old Chinese man. Metastasis was observed 2 months after operation and disappeared completely after chemotherapy. Until now, 3 years after surgery, the patient is still alive without any signs or symptoms of recurrence.To our knowledge, this is the first case of carcinosarcoma originated from lesser omentum. Surgical resection and the ifosfamide-based combination chemotherapy may be effective to carcinosarcoma in the lesser omentum.
authors.affiliation: From the Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Division of Hepatobiliary and Pancreatic Surgery (BW, K-WR, Y-CY, D-LW, Z-LZ, L-LZ, S-SZ); and Division of Pathology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China (X-JL).
authors.forename: Bei
authors.initials: B
authors.lastname: Wang
authors.forename: Kui-Wu
authors.initials: KW
authors.lastname: Ren
authors.forename: Yun-Chuan
authors.initials: YC
authors.lastname: Yang
authors.forename: Da-Long
authors.initials: DL
authors.lastname: Wan
authors.forename: Xue-Jie
authors.initials: XJ
authors.lastname: Li
authors.forename: Zheng-Long
authors.initials: ZL
authors.lastname: Zhai
authors.forename: Le-Le
authors.initials: LL
authors.lastname: Zhang
authors.forename: Shu-Sen
authors.initials: SS
authors.lastname: Zheng
mesh_terms: D000368:Aged; D002296:Carcinosarcoma / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D008297:Male; D009852:Omentum; D010534:Peritoneal Neoplasms / Q000175:diagnosis / Q000628:therapy