Frequently Asked Questions on Topics for the Entire Family, for your health and well being and more! FAQs - Colonoscopy What is Colonoscopy? What's the difference between sigmoidoscopy and colonoscopy? When should I begin screening? How should I prepare for the colonoscopy? What can I expect during the colonoscopy? What if an abnormality is found? What are polyps and how are they removed? What if I have cancer? What can I expect after the colonoscopy? Things to Watch Out For If there is a subject you think we need in the FAQ section, please contact us and let us know!