Freddie, my middle brother got a stomach cancer diagnosis for his 50th birthday in 2009. He had most of his stomach removed and pathology showed not all the margins were clear and that it was an aggressive form of cancer. He had chemo and radiation and more chemo.
He has to be constantly monitored of course with 6 monthly gastroscopys and scans, but so far so good. He is currently looking fantastic and has even returned to work 6 days a week.
I hope all continues to go ok, but it's a time will tell thing. I hope your brother has the same success. Were here for you. X