Larynx, hypopharynx & trachea

Inflammatory / infectious lesions

Acute laryngoepiglottitis

Topic Completed: 1 November 2013

Minor changes: 3 March 2021

Copyright: 2002-2021,, Inc.

PubMed Search: Acute laryngoepiglottitis

Nat Pernick, M.D.
Page views in 2020: 363
Page views in 2021 to date: 484
Cite this page: Pernick N. Acute laryngoepiglottitis. website. Accessed December 8th, 2021.
Definition / general
  • Also called acute supraglottitis
  • Rare; due to Haemophilus influenza type B or Streptococcus pyogenes; reduced incidence due to childhood vaccine for H. influenza
  • May produce sudden lethal swelling of epiglottis and vocal cords
  • Croup: laryngotracheobronchitis in children; inflammatory narrowing produces inspiratory stridor
Gross description
  • Red and edematous epiglottis
Microscopic (histologic) description
  • Acute inflammatory infiltrate with edema, extending to adjacent soft tissues
Microscopic (histologic) images

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H. influenza (site unknown)

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