Annular pancreas diagnosis

Overview
Postnatal diagnostic procedures include abdominal x-ray and ultrasound, CT scan, and upper GI and small bowel series.

Diagnostic Findings

 * ERCP: An aberrant pancreatic duct communicating with the main pancreatic duct and encircling the duodenum.
 * CT or MRI studies may show normal pancreatic tissue, with or without a small pancreatic duct, encircling the duodenum.
 * Upper GI series: Narrowing of the second portion of the duodenum.