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Digestive system
Digestive system


Endocrine glands
Endocrine glands


Annular pancreas
Annular pancreas


Definition:

An annular pancreas is a ring of pancreatic tissue that encircles the duodenum (the first part of the small intestine, just below the stomach).



Causes, incidence, and risk factors:

Annular pancreas is caused by malformation during the development of the pancreas, before birth. This condition may result in a narrowing of the duodenum due to squeezing by the ring of pancreas.

Complete obstruction of the duodenum is often seen in newborns with this condition. However, half of cases are not diagnosed until symptoms occur in adulthood. There are probably many cases that go undetected due to mild symptoms.

People with this condition are more like to have a peptic ulcer .



Symptoms:

Signs and tests:

Signs that may indicate annular pancreas include:

Tests include:



Treatment:

Surgical bypass of the blocked part of the duodenum is the usual treatment for this disorder.



Support Groups:



Expectations (prognosis):

The outcome is usually good with surgery.



Complications:
  • Obstructive jaundice
  • Pancreatitis (inflammation of the pancreas)
  • Peptic ulcer
  • Perforation (tearing) of the intestine due to obstruction
  • Peritonitis


Calling your health care provider:

Call for an appointment with your health care provider if you or your child have any symptoms of annular pancreas.



Prevention:



References:

Russo MA, Redel CA. Anatomy, histology, embryology, and developmental anomalies of the stomach and duodeum. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 8th ed. Philadelphia, Pa: Saunders Elsevier; 2006: chap 45.




Review Date: 11/17/2008
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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