Case Report

The Water Jet Deformation Sign: A Novel Provocative Colonoscopic Maneuver to Help Diagnose an Inverted Colonic Diverticulum

Abstract:Colonoscopic differentiation of an inverted colonic diverticulum from a true colonic polyp is important because a true colonic polyp usually requires colonoscopic snare polypectomy or at least biopsy, whereas these maneuvers are contraindicated for an inverted diverticulum due to the risk of colonic perforation. Previously described diagnostic maneuvers to evert…