my granddaughter has a lump to the left back of her neck that is progressivly getting bigger, it is painful to touvh for her but not excrutiating. he md said it is a lymph node but me beeing an er nurse, dont believe that is what it is, becuase it is not going away, just getting bigger and the location of it is not anywhere near the lymph nodes, and it is painfull to touch, what should we do?