Conversation: The conversation between human and AI assistant.
[|Human|] I HAVE A MASS ON LOWER BACK THAT MOVES.  KIND OF BY MY SPINE BUT CAN MOVE AROUND, SEEMS LIKE SMALLER ONES GO DOWN TOWARDS TAIL BONE.  HAVE HAD FOR YEARS.  DOESNT REALLY CAUSE PAIIN BUT DISCOMFORT, SOMESTIMES SLIGHT TINGLE SENSATION.  HAD FAMILYY DR FEEL SHE WANTS TO SEND ME TO SURGEON.  ANY IDEA
[|AI|]  Hello and welcome to Chat Doctor, A lump at the base of spine associated with tingling sensation suggests that the lump is arising from nerve. Any swelling arising from nerve is usually associated with tingling sensation. Since, the lump is near the spine, possibility of being associated with the spine is more likely. An imaging study is required to know the site of origin and underlying site of attachment. On the basis of its attachment or origin to underlying structures, further management can be planned. Consult your primary healthcare provider for clinical assessment and relevant investigations for further work up. Thanks and take care Chat Doctor.