ניתוח הוצאת פוליפים

Hello,
My daughter is 2ys & 9 mos. In the winter she used to be sick a lot and I noticed that her hearing is low, after examine her hearing we found out that she doesn’t hear 100% her doctor gave her antihistamines syrup and we checked her hearing after a month there was an improvement but she still doesn’t hear 100% her doctor recommended to take the androids out – but no x-ray were taken - how could he determined that this is the problem? And how do you recommend to take it further – thanks a lot.