Talk to Ent Specialist on Swollen Throat( Diagnosed Goiter In Early Teens And Was Cured As Well), Allergy Patient

Aoa My sister age 28 throat is swollen from the front, it doesnt remain swollen all the time but at times it swells and she gets mild fever as well then it gets cured by itself. She was diagnosed goiter in early teens, doctor gave lugols iodine drops for 6 month and it was cured. Now since last year this problem is seen as throat is swollen and she gets fatigue Who will be the best doctor for it be checked? ENT specialist or thyroid specialist? Weight and all other symptoms associated with thyroid are not present