T Adachi1, T Hinoi, H Egi, M Shimomura, H Ohdan. 1. Department of Gastroenterological and Transplant Surgery Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, 7348551, Japan, adachitomohiro@hotmail.com.
Abstract
PURPOSE: To estimate the feasibility and limitations of incomplete cytoreductive surgery and modern systemic chemotherapy in patients with synchronous peritoneal carcinomatosis from colorectal cancer and to identify risk factors for death and factors associated with the patient prognosis. METHODS: Sixty-five consecutive patients underwent surgery for synchronous peritoneal carcinomatosis from colorectal cancer at Hiroshima University, Japan between 1992 and 2012. The clinical, histological, and survival data were analyzed for independent risk factors and prognostic factors. The patients were retrospectively stratified into two groups according to the extent of surgery: complete cytoreductive surgery or incomplete cytoreductive surgery. RESULTS: The median survival times in the complete and incomplete cytoreductive surgery groups were 29.8 and 10.0 months, respectively. Receiving systemic chemotherapy alone was an independent risk factor for death in the incomplete cytoreductive surgery group (P < 0.001). Oxaliplatin and molecular-targeted drug (cetuximab or bevacizumab) therapies were also independent prognostic factors (P < 0.001), whereas irinotecan therapy was not a prognostic factor (P = 0.494). CONCLUSION: Oxaliplatin and molecular-targeted drug therapies improved the overall survival in patients undergoing incomplete cytoreductive surgery. Future trials for patients with synchronous peritoneal carcinomatosis from colorectal cancer should be undertaken, with patients stratified according to treatment with complete cytoreductive surgery or incomplete cytoreductive surgery with modern chemotherapy.
PURPOSE: To estimate the feasibility and limitations of incomplete cytoreductive surgery and modern systemic chemotherapy in patients with synchronous peritoneal carcinomatosis from colorectal cancer and to identify risk factors for death and factors associated with the patient prognosis. METHODS: Sixty-five consecutive patients underwent surgery for synchronous peritoneal carcinomatosis from colorectal cancer at Hiroshima University, Japan between 1992 and 2012. The clinical, histological, and survival data were analyzed for independent risk factors and prognostic factors. The patients were retrospectively stratified into two groups according to the extent of surgery: complete cytoreductive surgery or incomplete cytoreductive surgery. RESULTS: The median survival times in the complete and incomplete cytoreductive surgery groups were 29.8 and 10.0 months, respectively. Receiving systemic chemotherapy alone was an independent risk factor for death in the incomplete cytoreductive surgery group (P < 0.001). Oxaliplatin and molecular-targeted drug (cetuximab or bevacizumab) therapies were also independent prognostic factors (P < 0.001), whereas irinotecan therapy was not a prognostic factor (P = 0.494). CONCLUSION:Oxaliplatin and molecular-targeted drug therapies improved the overall survival in patients undergoing incomplete cytoreductive surgery. Future trials for patients with synchronous peritoneal carcinomatosis from colorectal cancer should be undertaken, with patients stratified according to treatment with complete cytoreductive surgery or incomplete cytoreductive surgery with modern chemotherapy.
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