Duodenal diverticulitis complicated by abscess formation is a rare clinical entity, albeit may, in some cases, be associated with significant morbidity and mortality. We present a unique case that elucidates the success of endoscopic management of duodenal diverticulitis complicated by an abscess in the third part of the duodenum, through forward-viewing endoscopic maneuvers. Although surgery has been the primary interventional strategy for complicated duodenal diverticulitis beyond medical management, endoscopy is shown to be a safe and effective alternative in the clinically stable patient and/or poor surgical candidate, for this uncommon sequela of duodenal diverticulosis.