Pyriform Aperture Stenosis
Pyriform aperture stenosis (PAS) is a very rare birth defect where the front opening of the nose is narrow due to an overgrowth in the upper jaw bone. PAS is sometimes associated with other abnormalities, including the presence of a single central incisor tooth and pituitary abnormalities.
The Center for Pediatric Airway Disorders is the only one of its kind in the Greater Philadelphia region. As part of one of the top-ranked and largest children’s hospitals in the U.S., we have cared for children from all over the country and beyond.