In stage 0, the cancer cells are only in the top layer of the anal tissue. Your doctor may recommend more-frequent or earlier screening if you have other risk factors, such as a family history of colon or rectal cancer. What are the key statistics about anal cancer? The anus, rectum and a section of the bowel are surgically removed, and a colostomy will be established.
Utilizing these figures to compute the relative excess risk also enables a more accurate comparison of the effects of surgery on RC and CC patients. These findings are in line with the overall 1-year excess mortality rates of