Anal Fissure, Fistula and Abscess
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Diagnosis Anal Abscess
Diagnosis of an abscess is usually made on examination of the area. If it is near the anus, there is always pain, and often redness and swelling. Signs of a fistula and abscess may not be present on the skin’s surface or around the anus. In this case, the physician uses an instrument called an anoscope to see inside the anal canal and lower rectum.Whenever the physician finds an abscess, and especially a fistula, further tests are needed to be sure Crohn’s disease is not present. Blood tests, x-rays, and a colonoscopy (a lighted, flexible scope exam of the bowel or colon) are often required.
