most recent edition of the staging system, more sub-stages
stratify the survival benefit more distinctly than the previous
edition. Using data collected from 1991 through 2000, 119,363 patients
with colon cancer were included for analysis. Tumors were stratified
by the extent of the disease and the number of positive lymph nodes.
Comparisons were then made of overall survival and 5-year survival for
Results found that overall 5-year survival was 65%. The
6th edition of the AJCC staging system found that 5-year,
stage-specific survival is 93% for stage I colon cancer, 84%
for stage IIa, 72% for stage IIb, 83% for stage IIIa,
64% for stage IIIb, 44% for stage IIIc and 8% for stage
Journal of the National Cancer Institute. 2004; 96: 1420-1425.