title: Congenital nasal pyriform aperture stenosis: first case report in oman.
abstract: Congenital nasal pyriform aperture stenosis (CNPAS) is a recently defined clinical entity that causes airway obstruction in the neonate as a result of narrowing of the nasal pyriform aperture. The pyriform aperture is the narrowest, most anterior portion of the nasal airway, and a slight decrease in its cross sectional area will significantly increase the nasal airway resistance. This entity should be kept in the differential diagnosis of any neonate or infant with signs and symptoms of upper air way obstruction. The CNPAS presents with symptoms of nasal airway obstruction, which are often characterized by episodic apnea and cyclic cynosis.
authors.forename: Rashid
authors.initials: R
authors.lastname: Al Abri
authors.forename: Hashim
authors.initials: H
authors.lastname: Javad
authors.forename: Sudesh
authors.initials: S
authors.lastname: Kumar
authors.forename: Deepa
authors.initials: D
authors.lastname: Bharga
authors.forename: Rl
authors.initials: R
authors.lastname: Koul
authors.forename: Amna
authors.initials: A
authors.lastname: Al Futaisi
authors.forename: Dilip
authors.initials: D
authors.lastname: Sankla