A case of solitary median maxillary central incisor (SMMCI) syndrome with bilateral pyriform aperture stenosis and choanal atresia

Congenital nasal pyriform aperture stenosis: A report of 10 cases and literature review

“…In our unit, we have successfully used size 3.5 portex endotracheal tubes fashioned as nasal stents with a common anterior cuff [4]. Nasal stents were cited further back if a choanal atresia repair was also performed.…”

Solitary median maxillary central incisor, holoprosencephaly and congenital nasal pyriform aperture stenosis in a premature infant: case report

“…CT images showed medially displaced nasal protrusions of the maxillary bone and narrowing of the pyriform aperture, the diameter of which was measured as 3 mm. 10 In a series of 20 cases with the narrowing of nasal pryform aperture reported by Van Den Abbeele et al, 11 60% of the cases were found to have SMMCI syndrome.…”

“…This can be caused by choanal atresia, midnasal stenosis or narrowing of the nasal pyriform aperture. 10 Pyriform aperture is the narrowest section of the nasal airway, and a decrease in the diameter of this section results in respiratory difficulty by increasing airway resistance. Although embryological development and etiology of the narrowing of the pyriform aperture has not been well understood, it is caused by overgrowth of nasal and maxillary bones.…”

Incisivo central único de la línea media del maxilar, holoprosencefalia y estenosis congénita del orificio nasal anterior en un recién nacido prematuro: a propósito de un caso

“…Esto puede ser debido a la atresia de coanas, la estenosis medionasal o el estrechamiento del orificio nasal anterior. 10 El orificio nasal anterior es la porción más estrecha de las vías nasales y una reducción de su diámetro produce dificultad respiratoria al aumentar la resistencia de las vías. Si bien aún no se comprenden cabalmente el desarrollo y la etiología del estrechamiento del orificio nasal anterior, su causa es la excrecencia de los huesos nasales y maxilares.…”

“…En las secuencias de TC se observaron prominencias nasales desplazadas de la línea media al nivel del maxilar y estrechamiento del orificio nasal anterior, cuyo diámetro era de 3 mm. 10 En una serie de 20 pacientes con estrechamiento del orificio nasal anterior informada por Van Den Abbeele y col.…”