Stage 4 colon cancer is the most advanced colon cancer stage. The stage of a cancer, usually 1 to 4, indicates how much the disease has spread. It often takes into account the size of the tumor, how deep it has penetrated, whether it has invaded nearby organs, if and how many lymph nodes it has metastasized to, and whether it has reached distant organs.
The staging of cancer is essential because the stage during diagnosis is the strongest predictor of survival. Additionally, recommended treatments are often changed based on the cancer stage. Generally, the earlier the stage, the easier the cancer is to treat. There are five stages of colon cancer, from stages 0 to 4.