This rare but serious disorder occurs when one part of the intestine slides into another part, like a collapsible telescope.
Intussusception (in-tuh-suh-SEP-shun) is a serious condition in which part of the intestine slides into an adjacent part of the intestine. This telescoping action often blocks food or fluid from passing through. Intussusception also cuts off the blood supply to the part of the intestine that's affected. This can lead to infection, death of bowel tissue or a tear in the bowel, called perforation.
Intussusception is the most common cause of intestinal obstruction in children younger than 3 years old. The cause of most cases of intussusception in children is unknown. Though intussusception is rare in adults, most cases of adult intussusception are the result of an underlying medical condition, such as a tumor.
In children, the intestines can usually be pushed back into position with a minor procedure. In adults, surgery is often required to correct the problem.
Intussusception is a rare, serious disorder in which one part of the intestine slides inside an adjacent part.
The first sign of intussusception in an otherwise healthy infant may be sudden, loud crying caused by belly pain. Infants who have belly pain may pull their knees to their chests when they cry.
The pain of intussusception comes and goes, usually every 15 to 20 minutes at first. These painful episodes last longer and happen more often as time passes.
Other symptoms of intussusception include:
Not everyone has all of the symptoms. Some infants have no obvious pain. Some children don't pass blood or have a lump in the belly. And some older children have pain but no other symptoms.
Intussusception is rare in adults. Also, because symptoms of the disorder often overlap with the symptoms of other disorders, it's more challenging to identify. The most common symptom is belly pain that comes and goes. Nausea and vomiting also may occur. People sometimes have symptoms for weeks before seeking medical attention.
Intussusception requires emergency medical care. If you or your child develops the symptoms listed above, seek medical help right away.
In infants, pulling the knees to the chest and crying are often symptoms of belly pain.
Your intestine is shaped like a long tube. In intussusception, one part of your intestine — usually the small intestine — slides inside an adjacent part. This is sometimes called telescoping because it's similar to the way a collapsible telescope slides together.
In some cases in adults, the telescoping is caused by a growth in the intestine, such as a polyp or a tumor, called a lead point. The typical wavelike contractions of the intestine grab this lead point and pull it and the lining of the intestine into the bowel ahead of it. In most cases, however, no cause can be found for intussusception.
In most cases of intussusception in children, the cause is unknown. Intussusception seems to occur more often in the fall and winter. And because many children with the problem also have flu-like symptoms, some suspect a virus may play a role in the condition. Sometimes, a lead point can be identified as the cause of the condition — most frequently the lead point is a pouch in the lining of the small intestine (Meckel's diverticulum).
In adults, intussusception is usually the result of a medical condition or procedure, including:
Risk factors for intussusception include:
Intussusception can cut off the blood supply to the affected portion of the intestine. If left untreated, lack of blood causes tissue of the intestinal wall to die. Tissue death can lead to a tear in the intestinal wall, called a perforation. This can cause an infection of the lining of the abdominal cavity, known as peritonitis.
Peritonitis is a life-threatening condition that requires immediate medical attention. Symptoms of peritonitis include:
Peritonitis may cause your child to go into shock. Symptoms of shock include:
A child who is in shock may be conscious or unconscious. If you suspect your child is in shock, seek emergency medical care right away.
Your or your child's health care provider will start by getting a history of the symptoms of the problem. The provider may be able to feel a sausage-shaped lump in the belly. To confirm the diagnosis, your provider may order:
Treatment of intussusception typically happens as a medical emergency. Emergency medical care is required to avoid severe dehydration and shock, as well as prevent infection that can occur when a portion of intestine dies due to lack of blood.
Treatment options for intussusception may include:
A water soluble contrast or air enema. This is both a diagnostic procedure and a treatment. If an enema works, further treatment is usually not necessary. This treatment can actually fix intussusception 90% of the time in children, and no further treatment is needed. If the intestine is torn (perforated), this procedure can't be used.
Intussusception recurs up to 20% of the time, and the treatment will have to be repeated. It is important that a surgeon be consulted even if treatment with enema is planned. This is because of the small risk of a tear or rupture of the bowel with this therapy.
In some cases, intussusception may be temporary and go away without treatment.
Emergency medical care is required to treat intussusception. You may not have much time to prepare for an appointment.
Your child's health care provider is likely to ask you several questions, including:
Don't give your child any nonprescription medications to treat symptoms before the appointment. Don't give your child anything to eat if you see any of the symptoms of intussusception. Seek immediate medical attention.