Can I sue the hospital because they were supposed to take his tonsils out and during surgery decided not to?

He was scheduled for adenoid removal and a tonsillectomy. The day of surgery comes and he is out of surgery in recovery. The doctor approaches me and tells me that they only removed his adenoids and not his tonsils. The main reason I had issues with my son was because he would throw up a lot and couldn't breathe well due to enlarged tonsils. One year later my son is 3 1/2 and I'm having the same problem. Other doctors have told me that his tonsil need to be removed. I am furious that my 3 1/2 year old suffers the consequences because they didn't complete the whole surgery and now I have to suffer again and watch my son get surgery again.