Patti
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        There is a huge difference in what a colonoscopy can show vs. what a CT shows!  The CT cannot show polyps or lesions inside the colon unless they are very large.  If there is any question at all, you should not hesitate to have a colonoscopy done.  They are painless and the worst part is the preparation.  It could save your life.