My Mother had a colonoscopy in June 2012 (70 years old, in good health, up on her health screenings - has had 5 colonoscopies) anyway in December 2012 she developed some rectal bleeding and went back in and asked him to check it out. He did a sigmoid and said he missed a rectal polyp on the original colonoscopy that was cancerous. He said it was small and it would have to come out right away - we went to a colo-rectal surgeon (chief of colo-rectal surgery at UPMC Presbyterian) and he said it was a stage 3 rectal cancer that was curable. 2 weeks later they ran a pet scan and saw some liver mets. My Mom had 17 chemo treatments, radiation, surgery and had a bad outcome. What could we have done to save her?