<s>[INST] I have a bump on the back right side of my tongue. It has been there for about four weeks and from time to time seems to have a white head/center in it. It only hurts if I bump it or once in a while it will leak a fluid. Can you tell me what it might be? [/INST] Hi, thanks for sharing your health concerns with HCM!    If I were your treating Doctor for this case of TONGUE bone lump, I would come up with only one and one possibility and that is is a cyst with recurrent infections!I think not to worry much about this but get examined by a surgeon for confirmation and potential surgical removal!Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health. </s>