Abstract
To determine the neuropathologic findings in tissue obtained from children with laryngomalacia at a tertiary-care pediatric hospital. Retrospective review of consecutive cohort compared with a control group. We reviewed supra-arytenoid pathology specimens from 43 children with severe laryngomalacia and 13 age-matched pediatric autopsy controls. Histopathologic comparison was made of nerve hypertrophy (including nerve perimeter and surface area) among experimental and control pathologic specimens. There exists a statistically significant increase in nerve perimeter (P = .001) and nerve surface area (P = .02) in supra-arytenoid specimens in patients with severe laryngomalacia compared with age-matched autopsy supra-arytenoid tissue. The pathologic finding of nerve hypertrophy in children with laryngomalacia provides new evidence to support neurologic dysfunction as the etiologic theory of laryngomalacia.
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