title: Congenital nasal piriform aperture stenosis.
abstract: A 3-1/2-month-old girl presented with respiratory difficulty secondary to nasal obstruction. CT demonstrated stenosis of the nasal piriform aperture. The presentation of this entity is similar to that of posterior choanal atresia.
authors.affiliation: Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27599-7510.
authors.forename: A
authors.initials: A
authors.lastname: Bignault
authors.forename: M
authors.initials: M
authors.lastname: Castillo
mesh_terms: D002754:Choanal Atresia / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007223:Infant; D008437:Maxilla / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D015508:Nasal Obstruction / Q000151:congenital* / Q000000981:diagnostic imaging / Q000601:surgery; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed