Hemorrhoids are swollen veins in the anal canal. This common problem can be painful, but it's usually not serious. Veins can swell inside the anal canal to form internal hemorrhoids. Or they can swell near the opening of the anus to form external hemorrhoids. You can have both types at the same time.
What can cause a hard lump in the anus?
A lump at the anal opening! help | Cancer Chat
Medically reviewed by Drugs. Last updated on May 13, Hemorrhoids are lumps or masses of tissue in the anus, which contain enlarged blood vessels. Any increase in abdominal pressure may produce hemorrhoids. This may be from:. Internal hemorrhoids. Internal hemorrhoids lie inside the anal canal, where they primarily cause the symptom of intermittent bleeding, usually with bowel movements, and sometimes mucous discharge.
Signs and Symptoms of 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.
Back to Health A to Z. The symptoms of anal cancer are often similar to more common and less serious conditions affecting the anus, such as piles haemorrhoids and small tears or sores called anal fissures. See a GP if you develop any of these symptoms. While they're unlikely to be caused by anal cancer, it's best to get them checked out.