Perianal warts.These are also known as condylomata accuminata and are common in homosexual men. These growths occur in the perianal region and within the anal canal. The human papilloma virus is the main risk factor. Although small lesions may respond to repeated applications of topical agents such as podophyllin, more extensive lesions require surgical or combination treatment. Intralesional Interferon may be a useful adjunct to surgical methods in reducing the risk of recurrence. Occasionally local excision biopsy is indicated in order to exclude squamous carcinoma.
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