Conversation: The conversation between human and AI assistant.
[|Human|] Hello, Is this my tailbone or a tumor? The end of my tailbone feels like a large round ball. It s hard and doesn t move or cause me any pain. I can feel the round ball while sitting down or laying in certain positions. There is no redness or irritation which is leading me to believe that it s not a cyst . Thank you for your time!
[|AI|]  Hi, The area you locate the swelling can be of any nature. You say that it is painless, fixed & ball-shaped. As you have expressed - it may be Non-inflammatory swelling. So swelling may be arising from skin, subcutaneous fat, muscle, fascia & bone. To find the location you need MRI Scan of the lumbar & sacral bones. The result will clearly indicate whether swelling is arising from bone or superficial to the bone. If superficial to the bone the possible plane of the swelling. After that the Chat Doctor.  Get the opinion from General, Orthopedic & Neurosurgeon and initiate the treatment as early as possible. Best Wishes