An anal abscess is a pus-filled pocket located in the spaces around the anus and rectum. The abscess can be found near the surface of the anal opening or deeper in the rectum. An anal abscess is caused by a bacterial infection. Infection may occur when there is a blockage in one or more of the anal glands that secrete mucous, or from an anal fistula.
Anal carcinoma presenting as a perirectal abscess or fistula.
Abscess and Fistula Expanded Information | ASCRS
The association between benign anal lesions and anal cancer is still unclear. Few data from large cohort studies are available. Multiple record linkages identified all incident anal squamous cell carcinoma only and colorectal cancers through to There was a distinct incidence peak in the first three years of follow up among patients with inflammatory lesions. SIR then levelled off at around 3 and remained at this level throughout follow up SIR during years 3—37 of follow up was 3. A similar initial incidence peak was observed among haemorrhoid patients but was confined to the first year; SIR was 2.
Nine patients had acute abscesses without histories of chronic anorectal disease, and six patients had long-standing anorectal disease in which carcinoma developed. Operative exploration was needed to establish the diagnosis in all patients. Early definitive surgery would certainly have prevented most if not all of the cancers from developing in the group with chronic anorectal disease. Arch Surg. All Rights Reserved.
Skip to Content. In addition, this page includes information on how to reduce your risk of getting anal cancer. Use the menu to see other pages. Although risk factors often influence the development of cancer, most do not directly cause cancer.