Management for Peritoneal Metastasis of Colonic Origin: Role of Cytoreductive Surgery and Perioperative Intraperitoneal Chemotherapy: A Single Institution’s Experience During Two Decades
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Peritoneal metastasis of colonic origin is associated with a poor prognosis. This study aimed to analyze the clinicopathologic characteristics and prognostic predictors of survival in a cohort of patients treated with cytoreductive surgery (CRS) and perioperative intraperitoneal chemotherapy (POIC) during two decades.
A retrospective study analyzed a prospectively maintained database for all patients treated for peritoneal metastasis of a colonic origin (PCC) from January 1990 to April 2015.
The 318 patients in our study comprised 171 men (53.8%) and 147 women (46.2%). The mean age of the patients at presentation was 50.6 years, (range 18–86 years). Overall survival was 42.5%, median survival and follow-up time was 21.5 and 15.0 months respectively. The 3 and 5 years survival rates were respectively 35 and 25%. The median survival time was 20.6 months for the men and 23.1 months for the women (p = 0.14). The mean intraoperative peritoneal carcinomatosis index (PCI) was 15.2. The patients who had a completeness of cytoreduction (CC) score of 0 or 1 (no residual disease <0.25 mm) had a median survival time of 36.6 months compared with 18.3 months for the patients with a CC-2 score and 7.6 months for the patients with a CC-3 score (p < 0.000). The significant independent predictors of survival in the multivariate analysis were the CC score and elevated tumor makers CA153 and CA125.
For patients with a limited extent of peritoneal metastases, CC is the most important prognostic variable for improved survival of colon cancer patients with peritoneal metastases.
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