Annular Pancreas

Annular pancreas is a rare condition often presenting in neonates where pancreatic tissue encircles the duodenum, causing obstruction, vomiting, and abdominal distention. The causal mechanism of annular pancreas is unknown, but it is hypothesized to be a result of malformations in embryological development. Imaging is part of the diagnostic workup in neonates with bilious emesis. However, in these patients, imaging is used to identify other, more serious conditions. Older children and adults typically have less severe symptoms. In these patients, the diagnosis may be made incidentally via imaging. Once diagnosed, patients are treated surgically.