Does any body know which is the best hospital in US for brain tumor surgery?

There will be excellent centers for all kinds of surgery in the USA. Can you be more specific as to what surgery is needed and where the patient lives? I actually live in the UK but I do a lot of research for patients looking for specialised treatment both in the UK and the USA.

I want to know about the weight loss surgery, is it harmful
or not. plz give me detail information about the
surgery.

All surgery comes with a risk James especially surgery on very overweight people. I do not know what weight of person you are talking about but if someone is very obese the risk can be as high as 50/50 However the alternative once you get to that stage is almost certain death from the strain on the organs from obesity itself so it is a sort of last chance saloon. If you want to know for a specific person then ask them to visit their doctor who will explain it all in full, or a reputable clinic that carries out this procedure.

There are well experienced doctors and well equipped hospitals in the whole US for brain tumor surgery. But in order to get a good answer you should be more precise.