title: [A case of retroperitoneal dedifferentiated liposarcoma successfully treated with IFM and CDDP].
abstract: A 53-year-old man was evaluated for a chief complaint of abdominal bloating. Physical examination revealed an abdominal distention and ascites, and CT showed multiple large retroperitoneal masses. The patient was diagnosed with retroperitoneal liposarcoma. Surgery was performed including the tumor, small bowel, and sigmoid resection, and an artificial anus was constructed. Multiple tumors in the peritoneum were noted. Large dark red tumors that were hemorrhagic were resected, but the yellowish tumors were unresectable. On histopathology, the dark red lesions showed dedifferentiated liposarcoma, and the yellowish lesions showed well-differentiated liposarcoma. One month postoperatively, peritoneal dissemination increased including nodular infiltration of the artificial anus and multiple hepatic metastases. Despite VAC chemotherapy (VCR 1.5 mg, ACD 0.5 mg, CPA 900 mg), progressive disease (PD) was noted. As second-line chemotherapy, weekly IFM (2 g)+CDDP (30 mg) was given. Shrinkage of the tumor infiltrates in the artificial anus, decreased abdominal bloating, and improved QOL were observed. A partial response (PR) against peritoneal dissemination was achieved. However, hepatic metastases increased, and the patient died 6 months after surgery. This case suggests that IFM+CDDP may be useful in dedifferentiated liposarcoma.
authors.affiliation: Department of Surgical Oncology, Kanazawa Medical University.
authors.forename: Miki
authors.initials: M
authors.lastname: Yokoi
authors.forename: Kenzo
authors.initials: K
authors.lastname: Hosokawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Funaki
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Yoshitani
authors.forename: Shinichi
authors.initials: S
authors.lastname: Kinami
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Omote
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Ueda
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Nakano
authors.forename: Takeo
authors.initials: T
authors.lastname: Kosaka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Minato
mesh_terms: D000970:Antineoplastic Agents / Q000008:administration & dosage; D018906:Antineoplastic Agents, Alkylating / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002945:Cisplatin / Q000008:administration & dosage; D006801:Humans; D007069:Ifosfamide / Q000008:administration & dosage; D008080:Liposarcoma / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D012186:Retroperitoneal Neoplasms / Q000188:drug therapy*
chemical_list: D000970:Antineoplastic Agents; D018906:Antineoplastic Agents, Alkylating; D002945:Cisplatin; D007069:Ifosfamide