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What are the stages of colorectal cancer?

Doctors describe colorectal cancer by the following stages:

Stage 0: The cancer is found only in the innermost lining of the colon or rectum. Carcinoma in situ is another name for Stage 0 colorectal cancer. Stage I: The tumor has grown into the inner wall of the colon or rectum. The tumor has not grown through the wall. Stage II: The tumor extends more deeply into or through the wall of the colon or rectum. It may have invaded nearby tissue, but cancer cells have not spread to the lymph nodes. Stage III: The cancer has spread to nearby lymph nodes, but not to other parts of the body. Stage IV: The cancer has spread to other parts of the body, such as the liver or lungs. Recurrence: This is cancer that has been treated and has returned after a period of time when the cancer could not be detected. The disease may return in the colon or rectum, or in another part of the body.

This answer is based on source information from National Cancer Institutef.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.