has characteristic has characteristic isolated congenital nasal pyriform aperture stenosis https://github.com/monarch-initiative/mondo/issues/4069 https://www.malacards.org/card/isolated_congenital_nasal_pyriform_aperture_stenosis Orphanet:162516 isolated apertura pyriformis stenosis isolated nasal pyriform aperture hypoplasia MONDO:0015568 GARD:0020039 congenital otorhinolaryngologic disease