My mum was diagnosed with colon cancer 3 weeks ago. The surgeon recommended she have an op. The problem is, she has already had 2 tumours removed from her colon and lost 50% of her colon. Faced with the prospect of a 3rd op, she is refusing to have any treatment. I am wondering what to do next. Try and talk her round? Wait for the disease to run its course? Try and get a Macmillan nurse involved? I'm wondering how long…