Endoscopic ultrasound [EUS] as a diagnostic option for annular pancreas: a case report

Annular pancreas is a rare congenital condition of the pancreas where pancreatic tissue either partially or completely covers the duodenum by forming a ring. Endoscopic ultrasound is rarely considered as an initial diagnostic tool for annular pancreas. We here present the case of a 48-year-old male primarily provisionally diagnosed with a pancreatic mass for which a pancreatoduodenectomy was planned. However, an endoscopic ultrasound confirmed the diagnosis of annular pancreas.