As a parent, your concern is really evident. For now it's not yet urgent according to the doctor, I hope it doesn't get serious either. I think it is also a good idea to research more about this and ask for second opinion from other doctors perhaps. I, myself is terrified of operation, it's much more on your part especially as a parent, it is really giving you anxiety. Hopefully this is just part of growing up or physical changes in young kids, and can be treated easily.