A non-neoplastic polypoid lesion that arises from the anal canal or perianal skin. It is composed of dense fibrous stroma and it is covered by squamous epithelium. The disease is MONDO_0006549 (fibroepithelial polyp of the anus). Also known as: anal fibroepithelial polyp, anal fibrous polyp, anal tag, anus skin tag, fibroepithelial polyp of anus, fibrous polyp of anus, fibrous polyp of the anus.