[Clinical utility of the newly revised AJCC 9th edition colon cancer staging: a single-center retrospective study].

The AJCC 9th edition colon cancer staging system demonstrates superior overall discriminatory power and improved monotonicity of survival curves for stage I-III patients compared to the 8th edition, offering better prognostic consistency. While discrimination between substages within overall stages decreased, internal consistency improved. The detection and increasing number of tumor deposits adversely affect survival. The 9th edition staging system may provide enhanced prognostic value and better guide clinical decision-making regarding treatment strategies.