title: Quiz case 1. Congenital nasal pyriform aperture stenosis (CNPAS).
authors.forename: D
authors.initials: D
authors.lastname: Goldenberg
authors.forename: R
authors.initials: R
authors.lastname: Flax-Goldenberg
authors.forename: H Z
authors.initials: HZ
authors.lastname: Joachims
authors.forename: N
authors.initials: N
authors.lastname: Peled
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D003251:Constriction, Pathologic; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009296:Nasal Cavity / Q000002:abnormalities*; D014057:Tomography, X-Ray Computed