Annular pancreas in adulthood: Two compelling cases, including one with pyloric stenosis and chronic pancreatitis

Abstract

We report the infrequent occurrence of the annular pancreas (AP) in adults by presenting two remarkable cases. The first case involved an incidental discovery of an AP in a patient diagnosed with chronic pancreatitis. Surgical intervention was warranted due to gastric outlet obstruction resulting from pyloric stenosis. The patient underwent loop gastrojejunostomy (GJ) and duodenojejunostomy (DJ). The second case was evaluated for dyspeptic symptoms, and the AP was diagnosed on the contrast-enhanced abdomen CT. A bypass procedure in the form of loop DJ was performed to address the obstruction. These two cases underscore the distinctive presentations of AP and highlight the need for tailored strategies in their management.