case_images: PMC5025918_01
case_images: Axial computed tomography scan showing pyriform aperture stenosis
case_images: ABR-5-135-g001.jpg
case_images: PMC5025918_01_ABR-5-135-g001.jpg
case_images: F1
case_images: Considering these signs and symptoms, choanal atresia was suggested, but a cranial computed tomography (CT) scan revealed stenosis of the pyriform aperture with diameter of 6.3 mm at maximum while the posterior nasal choana had normal caliber [Figure 1].
case_images: PMC5025918_02