At his age it would have been almost impossible to catch this cancer so soon. With he being diagnosed with stage 3 colon cancer it probably started when he was about 34 years old.
No doctor with his great in shape body would have checked for it
Hate getting older (though obviously better than the alternative)-- I'll be that age next year and I'm taking this as a prompt to get checked next year even though I thought I didn't need to until 40.