<s>[INST] my son has some swelling in his neck on the left side it started about 3weeks ago when you feel it it feels like theres several small lumps in it it doesnt really hurt unless you mess with it its located about an inch above the clavicle and it lines up straight with the earlobe [/INST] Welcome to Chat Doctor .1. They are enlarged lymph nodes.2. Lymph nodal enlargement will be seen in case of any underlying medical conditions, recent infections / inflammations.3. It would have been helpful if you have mentioned your sons age.4. Other causes could be brachial cleft cyst, vascular causes, glandular enlargement. An ultrasound neck will help to evaluate the nature of the lump, origin and extensions.5. So get an appointment and do what is necessary tests and treatment done. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you. </s>