A Case of Anal Fibroepithelial Polyps with Sudden Swelling Circumferentially

• Published in: Nihon Daicho Komonbyo Gakkai Zasshi Vol. 78; no. 3; pp. 142 - 146
• Main Authors: Yamada, Hideki, Mori, Toshiharu, Mori, Hideki, Tanaka, Kaori
• Format: Journal Article
• Language: Japanese
• Published: The Japan Society of Coloproctology 2025; 一般社団法人日本大腸肛門病学会
• Subjects: anal fibroepithelial polyp; anal polyp; sudden; swelling; 急激; 線維上皮性ポリープ; 肛門ポリープ; 腫大
• ISSN: 0047-1801; 1882-9619
• DOI: 10.3862/jcoloproctology.78.142

Fibroepithelial polyps of the anus, also referred to as hypertrophied anal papillae, are caused by gradual enlargement of the anal papillae due to chronic inflammation such as congestion, trauma, or infection. They enlarge gradually over a chronic course, and there have been few reported cases of their sudden swelling. Here, we report a case in which some existing anal fibroepithelial polyps suddenly swelled circumferentially with pain. A 53-year-old woman presented to our clinic with a complaint of difficult defecation, anal pain, and bleeding for the past one week. Digital examination and colonoscopy revealed some circumferential masses on the dentate line with poor mobility, easy bleeding and hard elasticity. Histopathology of biopsies showed an anal ulcer. After using hemorrhoid ointment and laxatives, the pain and bleeding disappeared. Endoscopy one month later showed that the individual lesions had shrunk and were found to be normal anal polyps. Tumor removal was performed to confirm the diagnosis, and pathological examination revealed a diagnosis of anal fibroepithelial polyps.