<s>[INST] i have had a gel like lump on my neck for aseveral months - comes, and goes, a little tender now , no other symtoms, was checked out with body scan and head scan in april - not for this however..everything good also had full metabolic blood tests in May as well all good ?? [/INST] Welcome to Chat Doctor .1. The history and features suggest most possible cause could be lymph nodal enlargement.2. Lymph nodal enlargement can be due to any infection / inflammation local or systemic. 3. Other possible cause could be any glandular lesion, finally vascular cause.4. To conclude, after examination needs to get an ultrasound examination done - that will help in assessing the nature of the lesion, its source and extensions.5. Depending on findings if mass - a needle sample might be needed and treated accordingly. Good luck. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you. </s>