Try and remain positive for him as it could help you all as a family if you can carry on as near normal as possible. I don't know any facts about your son's case so it's a bit hard to be helpful but I was found to have colon cancer with a very large malignant tumour. Nevertheless I had the right half of my colon removed as I don't actually have any cancer spread so I am just having chemo as a precaution. There can be very different outcomes to colon cancer so it's not worth thinking the worst but obviously you would be upset but try and stay strong for him. What stage is he at with the diagnosis and treatment? With love