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The pancreas is an organ in the posterior (back) of your abdomen, just behind the stomach. A duct connects the pancreas to a part of the small intestine called the duodenum. It is responsible for excreting insulin into the bloodstream to transform glucose into energy. It also secretes enzymes into the intestines to directly aid in the digestion of food.
Normally, your pancreas sits next to your duodenum in your abdomen. In some people, tissue from the pancreas may surround the duodenum. When this happens, your duodenum can become restricted or blocked. This may impact your ability to digest food. This condition is known as annular pancreas.
Annular pancreas is a congenital condition. This means that it’s typically present at birth. Although doctors don’t know what causes the disorder, annular pancreas commonly occurs with other congenital disorders, including:
Annular pancreas also occurs with polyhydramnios, or excess amniotic fluid during pregnancy. Annular pancreas is a rare condition that occurs in only 1 in every 20,000 newborns. It occurs more frequently in males than females.
Symptoms of annular pancreas develop when tissue from the pancreas squeezes the small intestine. In some people, the tissue that surrounds the duodenum may be so small that it doesn’t cause any symptoms. This happens in half of all patients with this condition.
In other cases, the pancreatic tissue surrounding the small intestine causes a blockage that can make it difficult for a person to eat. Infants with annular pancreas may cry, spit up more than normal, and be unable to drink enough formula or breast milk.
Sometimes symptoms of annular pancreas don’t develop until adulthood. When symptoms occur, they may include:
If you have symptoms of this disorder, your doctor will ask you about your health history, including underlying congenital problems that you have or had in the past. Your doctor may need to order several tests to confirm your diagnosis. Tests used to confirm a diagnosis of annular pancreas include:
Your doctor may recommend surgery to bypass the pancreatic tissue. The goal of treatment is to remove the obstruction so that your small intestine can function normally. Typically, you can’t remove pancreatic tissue from the duodenum. Destruction of the pancreatic tissue can cause damage to the pancreas.
Surgical options for annular pancreas include gastrojejunostomy or duodenojejunostomy. These procedures will require your doctor to cut the intestine at the site of the blockage and reconnect the two parts of the intestine in an area below the obstruction.
You can’t prevent annular pancreas. The condition occurs due to genetic changes during fetal development. However, there are steps you can take to have a healthy pregnancy and a healthy baby:
If you receive a diagnosis of annular pancreas, you’ll need surgery to correct the problem. Following surgery, your recovery and long-term outlook should be quite good. If you have annular pancreas as an adult, you’re at higher risk for complications from the disorder. Complications may include:
In addition, adults who have annular pancreas have a higher risk for developing certain types of cancer, including biliary tract and pancreatic cancer.
Written by: Darla Burke
Medically reviewed on: Jan 07, 2016: Steven Kim, MD
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