at my last colonoscopy the doctor said that he could not complete the test because the ascending colon could not be visualized, I have severe tortuosity? in colon. I did not go back to him. The same thing happened at the test before, I had to go to the hospital, which has different equipment and there he could complete the test. The reason why I write to you is that I have difficulty to press my stool out. Question: is this connected, thank you, Ted Welte, 81+