Expat,
Where in Asia? I spent about 12 years in Singapore, Malaysia, Japan and China. There is some good work being done in Singapore and at Bumrangrad Hospital in Bangkok. The CEO is an old golfing friend of mine when we both lived in Malaysia. You might look into these areas, if you want to stay in the region.
Have you also done your research on other treatment methods such as the various radiation therapies? I suggest you do so as they may be better for you than surgery.