Cancer Stage IIIB Anal. Definition

Medical Definition: Cancer Stage IIIB Anal

Anal cancer Stage III is divided into stages IIIA and IIIB. In stage IIIB, the tumor may be any size and has spread to any of the following sites: 1) nearby organs and lymph nodes near the rectum, or 2) lymph nodes on one side of the pelvis or groin, and may have spread to nearby organs, or 3) the lymph nodes near the rectum or lymph nodes on both sides of the pelvis or groin, and may have spread to nearby organs.

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