<s>[INST] My daughter is 20 yrs old and has had a lump on the left side of her neck for over a year.  it is roughly the size of a quarter.  the dr. has given her antibiotics on two occasions and the bump has not gone away.  should I worry? and what test should I request from the dr. to rule out something serious? [/INST] Hi! Good evening. I am Dr Shareef answering your query. With this history, I would advise you to consult a general surgeon/pathologist for  FNAC of the lump for a cytological diagnosis. If doubt still persisted, then I would not hesitate for a histopathological diagnosis by an excision biopsy for a definitive treatment.I hope this information would help you in discussing with your family physician/treating doctor in further management of your daughter's problem. Please do not hesitate to ask in case of any further doubts.Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef. </s>