Conversation: The conversation between human and AI assistant.
[|Human|] I have a rubbery painless lump above the hairline on my neck. It started at the base of my skull. I took a round of PCN and it got smaller & moved down to my neck between the 2 bones at the base of my skull on the back of my neck. It is not moveable. I ve had it for 4 mo.
[|AI|]  Hello and welcome to Chat Doctor, The lump that you're having in the neck between two bones can be the same lump that you had previously, or it could be a newly developed lump. A X-ray of the lump is required to look for its origin - whether bony or from soft tissue. If the lump is arising from soft tissue, an aspiration of the lump is required. In aspiration cytology, cells are aspirated from the lump, spread on a slide and stained with appropriate stains. The stained cells are studied to look for the origin and nature of the lesion. Thanks and take care Chat Doctor.