Surgery was done in Sacramento, California.
Back in 2011 I began to be tired frequently. Over a period of months I reached a point where I couldn't walk more than 50 feet without having to stop and catch my breath. I was being treated by a cardiologist at Bumrungrad who had done a residency in the States and in fact had an office practice there for a time.
I saw him in May, 2012 and on my next visit in June he remarked that he'd noticed I appeared pale on my previous visit. So he waited a month to find out that my hemoglobin was 6.3! It was a colon tumor bleeding at a very slow rate likely since the fall of 2011.
Within the next week I got transfused 2 units of blood, confirmed the diagnosis by a colonoscopy at Bangkok Pattaya Hospital, packed my stuff up and moved back to California where I had surgery. The tumor was malignant, however it had not metastasized, so no further treatment was needed. Really lucky.
All this to explain why I could never have any trust in Thai medicine again and couldn't live in Thailand again given my ongoing heath.