Conversation: The conversation between human and AI assistant.
[|Human|] for a 4-5 days now ive been feeling like unwiped when pinching my anus.i did finger investigate a little and found moving mass about the size of large grain of rice about 1/2 inch past the opening. whom do i see (as in what doctor) and what it could be (moves under a finger and does NOT HURT)
[|AI|]  Hi. Thanks for your query, albeit short and specific. Noted the history and understood your concerns. The commonest cause of such a mobile lump within the anal canal or rectum can be a polyp. This can best be diagnosed by a per-rectal examination and ano-proctoscopy done by a General Surgeon or a proctologist, and thus you should take a reference for such a Specialist who can diagnose and treat well. I hope there are no other symptoms as you have not mentioned any.