A Study for Imaging the Lower Gastrointestinal Tract Using a Retro-TCE Capsule

Who May Qualify: - Are 18 years of age or older. - Are healthy or with a confirmed diagnosis of Lynch Syndrome - Are capable of giving willing to sign a consent form. - Are able to follow bowel prep instructions - Had a colonoscopy 0-24 months prior that did not show any abnormalities or individuals who report no gastrointestinal symptoms and no knowledge of any lower GI tract disease or abnormality and volunteer through Rally. Who Should NOT Join This Trial: - Who are over 75 years of age or older - With a history or current diagnosis of colonic and/or anal strictures - With a current diagnosis of any bleeding disorders - Who currently use drugs that interfere with coagulation (excluding low-dose aspirin) - With a history or current diagnosis of colorectal cancer - With a history or current diagnosis of diverticulosis or diverticulitis - With any prior anorectal, colorectal, or colonic surgery - With a history of volvulus or torsion - Who are pregnant - With contraindications to bowel prep or colonoscopy - With severe acute inflammatory bowel disease - With large hemorrhoids or hemorrhoidal bleeding or banding Always talk to your doctor about whether this trial is right for you.