I am 86 yr old male.. I am suffering problem of saliva intake.. When i intake saliva it causes a light pain in throat..but not in fooding n drinking... I went 2 an ent doc ..he tells me ur throat is conjusted n tell me 2 go for higher center. Then i went 2 another ent doc..he suggested me to do mri..i hav mri .MRI report is normal.. Enlarged thyroud gland with colloid nodules.. No mass n lympdynapathy seen.. I hv taken many antibiotics antiallergies  But no improvement.. Nw i am taking antacid n multivitamins tab Sir i want 2 knw wht sort of disease is this.. May chances of malignancy or other thing. Plz suggest me..