The five-year survival rate for someone with stage I colon cancer is 92%. But the five-year survival rate for someone with stage IV is just 12%. Beth McCaw-McKinney did everything right. "She ate healthy. She exercised. She always did her breast cancer examinations, pap smears. All that was on time," said Cathy McCaw-Engelman, Beth's sister. But then at age 53 she had her first colonoscopy. "They found a grapefruit-sized tumor in her colon. It was already in her lymph nodes and basically had spread," McCaw-Engelman said. Doctors gave Beth 3 months to live. She lived 3 years. Professor Annette Khaled...