Hello I have gone through your question and understand your concern. From the description in the query the fleshy outgrowth appears to be what is called as Anal wart which is just similar to genital wart. It is usually caused by human papilloma virus in most cases the growth is contacted through sexual contact, auto-infection of from warts on other parts of body or a healed anal fissure in patients with constipation may appear like a fleshy outgrowth. Kindly see a physician to get examined after which treatment can be initiated. The treatment methods vary depending on patient condition and can be either ablative or topical agent. Thank you.