Colon Cancer Staging
Once colon or rectal cancer is diagnosed, the physician will want to determine how extensive the cancer is and whether or not the cancer has spread (metastasized). This careful evaluation of the extent and location of cancer is called Staging. Staging may involve more tests, but it is required for the physician to determine the best way to treat the cancer.
The stages of colon and rectal cancer are 0 – IV and recurrent. Descriptions of each stage are as follows.
• Stage 0 – The cancer is present in only the lining of the colon or rectum. There is no spread (metastasis) to nearby tissues or other areas of the body.
• Stage I – The cancer is present in more of the lining of the colon or rectum. It has not spread (metastasis) to nearby tissues or other parts of the body.
• Stage II – The cancer has spread to nearby tissues outside of the colon or rectum but not to any lymph nodes. There is no evidence of metastasis (spread) to distant parts of the body.
• Stage III - The cancer has spread to nearby tissues outside of the colon or rectum and to nearby lymph nodes. There is no evidence of metastasis (spread) to distant parts of the body.
• Stage IV - The cancer has spread to nearby tissues outside of the colon or rectum, to nearby lymph nodes, and to distant parts of the body. Colon and rectal cancer typically metastasize (spread) to the liver and/or lungs.
• Recurrent – This is cancer that comes back after treatment. It may recur in the colon or rectum or in other parts of the body.
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