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Pyloric stenosis

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Pyloric stenosis

Pylorus between stomach and small intestine, with detail showing narrowed pylorus sphincter muscle (stenosis) before surgery and widened pylorus after surgery.

The pylorus is the muscle between the stomach and the first part of the small intestine. Pyloric stenosis is a condition in which a baby's pylorus gradually swells and thickens. This interferes with food entering the intestine and causes the baby to vomit most or all of their feedings.

To treat pyloric stenosis, a surgeon widens the pylorus sphincter muscle.

Current as of: October 19, 2023

Author: Healthwise Staff
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This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.