UPDATE 3/13/2015: Watch the updated version of this animation here: https://www.youtube.com/watch?v=K1BUhr3CLmk License Nucleus animations for education and marketing: http://www.nucleushealth.com/?utm_source=youtube&utm_medium=video-description&utm_campaign=lowergi-061808 This 3D medical animation shows the placement of an endoscope in the large colon (bowel) during a colonoscopy procedure to screen for polyps and colorectal cancer. During a colonoscopy or a sigmoidoscopy, a biopsy is sometimes preformed to distinguish between benign and cancerous tissue. If polyps are found during the colonoscopy a polypectomy is generally performed. ANCE00175