• Ann. Surg. Oncol. · Apr 2007

    Long-term characteristics of 5-year survivors after liver resection for colorectal metastases.

    • Kuniya Tanaka, Hiroshi Shimada, Michio Ueda, Kenichi Matsuo, Itaru Endo, and Shinji Togo.
    • Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan. ktrj112@urahp.yokohama-cu.ac.jp
    • Ann. Surg. Oncol. 2007 Apr 1; 14 (4): 1336-46.

    BackgroundWe investigated factors affecting 5-year survival in patients undergoing hepatic resection for colorectal cancer metastases, including events long after initial hepatectomy. Although retrospective studies have demonstrated survival benefit of hepatectomy for metastatic colorectal cancer, few have included sufficient 5-year survivors to identify survival-related factors throughout the clinical course.MethodsWe divided 156 patients with hepatectomy for colorectal cancer metastases into 5-year survivors (n = 64) and patients dying before 5 years after hepatectomy (n = 92). Clinicopathologic data were compared retrospectively with respect to long-term outcome.ResultsBy multivariate analysis, large liver tumors (adjusted relative risk, 2.029; P = .011), short tumor doubling time (1.809; P = .026), and origin from poorly differentiated primary adenocarcinoma (12.632; P = .001) compromised survival, whereas initial treatment-related variables did not. Although no difference was seen in initial treatment-related variables between 5-year survivors with recurrence after hepatectomy and patients dying before 5 years, repeat surgery was used more frequently in survivors (P < .001), typically with adjuvant chemotherapy.ConclusionsReoperations for each recurrence of metastases, followed by additional chemotherapy, frequently resulted in long survival.

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