Last October I was admitted into hospital with suspected kidney stones ended up having a 7 hour emergency op to have a tumour removed the size of a melon!! Turned out to be bowel cancer stage 3 given 50/50 chance to make the next 5 years. Had no symptoms blood in poo weight loss etc. The chemo knocked me about had every side affect going. Nearly upto a year now just had camera up dick bum and down throat everything clear up to now. Must admit camera up bum was worse kept feeling like I was shitting myself. Met a few people in a local cancer support group and a mate of mine caught his cancer early due to the poo sample test for over 60's. I am 52 so had no such test but if you are in any doubt get yourself checked out before it is too late. Thanks to my kidney stones (two times now) I stand a chance any longer undetected and it was game over!!