title: Histopathology of congenital subglottic stenosis.
abstract: Three patients with congenital subglottic stenosis are presented and whole organ serial-section studies of their larynges are discussed. A superiorly displaced first tracheal ring is observed to form a cartilaginous subglottic stenosis in one. This "trapped first ring" is demonstrated in horizontal, sagittal and coronal planes. Subglottic stenosis is a clinical diagnosis which describes multifarious histopathological forms of narrowing within the subglottic larynx.
mesh_terms: D003413:Cricoid Cartilage / Q000002:abnormalities / Q000473:pathology; D005260:Female; D005931:Glottis / Q000473:pathology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007818:Laryngeal Diseases / Q000151:congenital / Q000473:pathology; D008297:Male; D014132:Trachea / Q000002:abnormalities / Q000473:pathology