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. See more 3D medical animations from Nucleus Medical Art at http://www.nucleusinc.com/youtube
