Internal Medicine

Annular pancreas

Annular pancreas is a rare condition in which the second part of the duodenum is surrounded by a ring of pancreatic tissue continuous with the head of the pancreas.

image (2017). Exocrine Pancreas 1 – Pathoma. [online] Available at: [Accessed 16 Oct. 2017].
annularpancreas_fig_2 (2017). APSA – Annular Pancreas . [online] Available at: [Accessed 16 Oct. 2017].

Clinical features

  • Congenital duodenal stenosis or atresia Vomiting
    • Prevalent in children with Down’s syndrome


  • Bypass (duodenoduodenostomy)
  • If presenting as pancreatitis:
    • Resection of head of pancreas

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