Pyloric Stenosis
Alternate Names : Congenital Hypertrophic Pyloric Stenosis, Gastric Outlet Obstruction, Hypertrophic Pyloric Stenosis
DefinitionPyloric stenosis is a narrowing of the outlet from the stomach to the small intestine (called the pylorus). The condition primarily occurs in infants.
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Overview, Causes, & Risk Factors
This condition is caused by a thickening of the muscles of the pylorus. This prevents the stomach from emptying into the small intestine.
The cause of the thickening is unknown, although genetic factors may play a role. It occurs more commonly in boys than in girls and is rare in patients older than 6 months.
Approximately 1 in 4,000 infants is affected with this condition.
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