My 18 year old son has had chronic ear infections since birth. He has had numerous sets of tubes inserted and felt better temporarily. Now he has tinnitus in both ears. In addition, his one ear is severely retracted with a hole in the eardrum. Local doctor can't insert another tube and sent us to U of PA. Doctor there just want to watch for cholesteatomas with ct scans. He just had one in six months ago. Doctor was not happy with the low radiation scan and wants another one. First of all, I'm very worried abou the radiation for someone his age. So, we plan on going for another opinion. Is continuous ct scans the only option he has as per this highly regarded doctor from a highly regarded hospital?