Is it defiantly bowel/colon cancer?

You can get polyps in your bowel/colon and they may be benign (not a problem) or malignant (the kind that turn into cancer). If it is malignant then hopefully the cancer hasn't developed already. These polyps are common in older people and means that they have to get regular colonoscopies to remove the polyps. As long as they do that it shouldn't be a problem.