Analysis of colon cancer cases with macroscopic invasion into adjacent organs

Abstract

We examined 151 cases of colon cancer cases with invasion into other organs based on gross observation treated at our hospital. The aim was to identify a treatment policy paradigm for colon cancer cases with invasion into other organs. Combined resection of the affected organs was performed in 137 cases. The gross and histological diagnoses of invasion into other organs matched in 37.2% of cases. Comparison of the survival rates of colon cancer patients with invasion into adjacent organs with or without distant metastasis revealed that the prognosis was poor among Stage IV patients. Stage II and III patients had a good prognosis. In fStage II and III, no significant difference in outcome was noted based on the presence or absence of histological infiltration. The prognosis was relatively good after R0-1 resection, even among Stage IV patients. These results suggest that aggressive combined resection aimed at R0-1 resection can lead to a better prognosis.