I am very worried at the moment just had my first bowel  cancer test which came back positive to my shock I do everything right food lifestyle  and bike 40 miles 5 nights a week after a hard day plastering. I have had no symptoms either. The reason I am righting this is I am angry as during the colonoscopy  the doctor found a tumor took 2 biopsies and said come in for the results in 6 days, you have probably guessed what has happened they can't find them.Needless to say I am gutted  and my wife who works in the nhs is absolutely  mad, has any one else had this happen  and did you have to go through  the horrible  clean prep again for another colonoscopy.