It is likely that your friend could have a genetic disposition for colon cancer. He should get a gene test once he has recovered. I was the same age. My doctor

It is likely that your friend could have a genetic disposition for colon cancer. He should get a gene test once he has recovered. I was the same age. My doctor saw signs in an early blood test, and followed it up so mine got detected relatively early. My test was positive for Lynch syndrome, and I am now a colonoscopy veteran.