title: Non-hodgkin lymphoma mimicking polymyalgia rheumatica in a young patient.
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.affiliation: Department of Medicine, Sultan Qaboos University Hospital, Al Khod, Sultanate of Oman.
authors.forename: Juma
authors.initials: J
authors.lastname: Al-Kaabi
authors.forename: Saeed
authors.initials: S
authors.lastname: Ahmed
authors.forename: Azhar
authors.initials: A
authors.lastname: Rizvi
authors.forename: Ikram
authors.initials: I
authors.lastname: Burney