Swelling in throat has many causes. Is it lymph node
enlargement or it is thyroid
swelling. We have to look for other lymph nodes in the body. Painless swelling gradually enlarging in size is a matter of concern. If your physician felt the necessity of FNAC
it should be carried out. If this gives some clue, well otherwise a biopsy
may be needed but without having the full details about the nature of the swelling it might be difficult to comment. Have faith in your physician and follow his advice.