Metachonous Peritoneal Carcinomatosis Incidence After Curative Surgery for pT4 Colon Cancer Patients

This is an observational retrospective cohort study to determine metachronous peritoneal carcinomatosis in a specific subgroup of colon cancer patients, those with a final pathologic exam corresponding to pT4 tumors. Based on a sample size calculation of 1152 patients, a retrospective review of a three year period of every participant hospitals, 50 in total, of different characteristics, was stablished. Demographic, clinical, operative, histologic and oncologic follow-up variables were recorded.