- ADC adenocarcinoma, CEA carcinoembryonic antigen, CI confidence interval, SRC signet ring cell carcinoma, HR hazard ratio, Poor poor poorly differentiated adenocarcinoma, INF Infiltrating pattern of invasion, INFa Swelling proliferation, INF c Invasive proliferation, INF b between a and c. vs. versus, Left colon(Descending colon, sigmoid colon); Right colon( Cecum, ascending colon, transverse colon)