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About Anal Cancer

  • Anal cancer is a type of cancer that forms in tissues of the anus. The anus is the opening of the rectum to the outside of the body and at the end of the GI tract.

    Sometimes anal cancer causes no symptoms at all. But bleeding is often the first sign of the disease. The bleeding is usually minor. At first, most people assume the bleeding is caused by hemorrhoids (painful, swollen veins in the anus and rectum that may bleed).

    While symptoms are more likely to be caused by benign (non-cancer) conditions, like hemorrhoids, anal fissures, or anal warts, if you experience anal bleeding, it’s important that you have it checked by a doctor so that the cause can be found and treated, if needed.

    Learn about anal cancer and find information on how we support and care for people with anal cancer before, during, and after treatment.

    The following information is from the National Cancer Institute.

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