Topic Overview
What is Hirschsprung's disease?
Hirschsprung's disease
(congenital aganglionic
megacolon) is a birth defect in which nerve cells in the wall of the large
intestine
do not develop. These nerve cells, called ganglion cells,
control the muscles in that area that normally push food and digestive waste
through the large intestine. In Hirschsprung's disease, the muscles in the wall
of the large intestine do not relax, which prevents waste from moving through the
large intestine. This may lead to trapped stool, infection, inflammation, and
constipation.
Hirschsprung's disease is diagnosed soon after birth in about 1
of every 5,000 newborns. It is more common in males than
females.1
What causes Hirschsprung's disease?
The cause of Hirschsprung's disease is not known, but the disease tends to run in families (inherited). The incidence of the
disease in relatives of those who have it is higher than in the general
population.1
Hirschsprung's disease also may occur along with other medical
conditions, such as
Down syndrome and
congenital heart disease.
What are the symptoms?
General symptoms of Hirschsprung's disease include a swollen
abdomen and constipation. The newborn with Hirschsprung's disease may not pass
the first stool (meconium) until at least 48 hours after birth. Other symptoms vary
depending on the child's age, when the symptoms are recognized, the amount of
intestine affected, and the presence of complications. These symptoms may
include vomiting, having a poor appetite and refusing to eat, and not growing
or gaining weight as expected.
How is Hirschsprung's disease diagnosed?
A health professional usually first suspects Hirschsprung's
disease based on descriptions of your child's symptoms and the results of a
physical examination. A rectal biopsy, abdominal
X-ray,
barium enema, and other tests may be done to confirm
diagnosis.
Though Hirschsprung's disease is present from birth (congenital),
it may not be diagnosed until months or years later. However, most children
born with this disease are diagnosed within the first year of life.
In rare cases, an undiagnosed or untreated case can become
life-threatening.
How is it treated?
Children with Hirschsprung's disease require surgery to remove
the portion of the large intestine that has no nerve cells. The surgery is done soon
after the diagnosis is made, often within the first days or month of life.
After the surgery, the child may have recurrent constipation or leakage of
stool from the
rectum. Sometimes these complications require further
treatment.
Many children will not have intestinal problems that last forever. But most have long-term (chronic) problems with stomachaches, constipation, or stool leakage (fecal incontinence). If
long-term problems occur, they are
usually mild. Depending on the nature of the problem, treatment may include medicine, behavior
modification, biofeedback, cognitive behavioral therapy, or more surgery.
Emergency surgery may be needed if a dangerous problem occurs, such
as Hirschsprung's-associated enterocolitis (HAEC), an inflammation of the small
and large intestines.
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