What is pyriform aperture stenosis?

Also known as: PAS, congenital nasal pyriform aperture stenosis.

Pyriform aperture stenosis is a birth defect that affects the face and nose. The common presentation is a narrow nasal opening due to the upper jaw bone being larger than normal.

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Reviewed by: Yamilet Tirado, MD

This page was last updated on: 1/29/2019 3:21:13 PM