My father had Stage IV colon cancer, had it resected, has a colostomy, and went through six months of chemo. He finished in Dec. of 2007. In January they did a PET/CT scan which showed some minimal cancer in his pelvic area and a little around the ostomy site. They wanted to leave him off of chemo for two months and then get another PET scan. Medicare wouldn't let him get a PET scan March (because it hadn't been 90 days), They moved it to April and then they declined it again saying there wasn't enough reason to have it done. They finally got a CAT scan instead the last of April and it showed metastasis to the liver and one spot on his lung (all of which were not there in January). The question is this: they gave him less than six months if he doesn't have more chemo. They said 1 - 6 years if he had chemo. My dad doesn't really want to go through it again. He is 76 years old. Should I encourage him to do it or not. What are the odds really of him lasting 6 years????