Choanal atresia: precise CT evaluation.

Abstract

Computed tomography facilitates the diagnosis of children with choanal atresia. This modality defines the full anatomic abnormality of bony choanal atresia: medial bowing and thickening of the lateral wall of the nasal cavity, enlargement of the vomer, and fusion of these elements. Bony atresia patients can be clearly separated from those with membranous choanal atresia. In membranous atresia, the lateral wall of the nasal cavity is minimally affected and the vomer is normal. This precise anatomic evaluation aids in determining the surgical approach.

Correlations between selected parameters of nasal cavity in neonates and young infants — computed tomography study

“…This has been confirmed by our earlier studies, in which we demonstrated that this dimension increases at the rate of 0.162 mm/week [7]. Slovis et al [14] assessed the change in posterior nares dimension in a group of neonates, children and young adults, from their day of birth until the age of 20. They demonstrated that the dimension increased by 0.027 cm/year.…”

Pediatric video laryngo-stroboscopy

“…From birth to 2 months of age, the median right anterior mucosal width of the nares (the distance from the inferior aspect of the middle turbinate to the septum on CT imaging) has been reported as 2.91 AE 0.94 mm which explains the need for the smaller diameter nasal endoscopes [15]. Although the growth of the nasal choanae has been well documented [16][17][18], there remains a relative paucity of information regarding the actual growth and dimensions of the anterior and middle regions of the normal healthy infant's nose. This limits a better understanding of the optimal diameter endoscope that should be used for a given child and future research is needed.…”

Treatment of congenital nasal cavity stenosis by balloon dilatation in a newborn: A case report

“…Slovis et al [11] stated that the normal diameter of the nasal air space of a full term newborn is in the range of 3-10 mm. Despite potentially similar clinical presentations, the various congenital bony causes of nasal obstruction arise from different developmental disturbances and are surgically dissimilar.…”