The aim of these sessions will be to promote discussion on clinical management problems that fall outside standard clinical guidelines. Clinical cases will be presented, ideally by individuals who have managed the cases, and illustrated by high-quality endoscopic, radiologic and pathological images. Each case will be discussed by a multidisciplinary panel who will comment on the clinical presentation and management strategies. The audience will be invited to comment on the case throughout the presentation and case discussion and will also be invited to vote at intervals on diagnostic and treatment options.