Presence of a simple lateral extramural diverticulum at the junction of second and third parts of the duodenum – a case report

Introduction Though the exact etiology is not clear, the prevalence of duodenal diverticula increases with age and is found in less than 5% of post-mortem examinations [1]. Progressive weakening of the intestinal smooth muscles and increase in intraduodenal pressure is said to be the reason for this out pouching of the duodenum [2]. Most (70-75%) of duodenal diverticula occur in the periampullary region, within 2-3 cm radius of the ampulla of Vater [3]. Concave medial border of the duodenum is the common site for diverticula [2]. Because of its proximity to the head of the pancreas, fluid filled duodenal diverticula can be misinterpreted as pancreatic psuedocysts [2, 3].