Unusual presentation of annular pancreas as gastric outlet obstruction in an adult female: A rare case report

Annular pancreas (AP) is a rare congenital anomaly, usually present in childhood, with symptoms due to duodenal obstruction; however, this condition can manifest in adulthood with abdominal pain, gastric outlet obstruction, pancreatitis and pancreatic head mass. A 35-year-old female patient presented as vomiting and epigastric fullness after intake of food. Diagnosis was confirmed with contrast enhanced CT scan of the abdomen. Patient successfully underwent Gastro-Jejunostomy with uneventful postoperative recovery. Though rare, annular pancreas should be considered as differential diagnosis in patient presenting as gastric outlet obstruction after excluding common causes.