Conversation: The conversation between human and AI assistant.
[|Human|] my 18 year old son has a small pea sized lump on the right lower side of his neck. His neck seems tight.Feels like it along the muscle from his ear to his neck. He has problems with his shoulder muscle tightening right up thru this muscle as well. Has been there for awhile and not grown. it is moveable and seems to go up and down. smaller than 1 cm.
[|AI|]  HI. A node less than a cm may not be clinically significant, yet the best way to get a good diagnosis is to undergo FNAC= fine needle aspiration cytology. This probably has nothing to do with the weakness shoulder muscles. You have to get it properly evaluated by clinical examination by a Neurologist and tests as advised by Him/Her like MRI. The node is movable and not growing -can be a small lymph node or a sebaceous cyst.