“A brownish depressed area”: a novel narrow band imaging colonoscopic finding of a depressed adenoma

¹Wolfson Unit for Endoscopy, St. Mark’s Hospital, Imperial College London, London, UK

²Academic Department of Cellular Pathology, St. Mark’s Hospital, Imperial College London, London, UK

³Family Cancer Group, Cancer Research UK Colorectal Cancer Unit, St. Mark’s Hospital, Imperial College London, London, UK