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Title: Tracheobronchomegaly  
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Subject: List of diseases (T)
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Mounier-Kuhn syndrome
Classification and external resources
ICD-9 OMIM DiseasesDB MeSH D014137

Mounier-Kuhn syndrome (also called tracheobronchomegaly) is a very rare congenital disorder of the lung primarily characterized by an abnormal widening of the upper airways.[1] The abnormally widened trachea and mainstem bronchi are associated with recurrent lower respiratory tract infection and copious purulent sputum production, eventually leading to bronchiectasis and other respiratory complications.[2]


Woodring et al (1991) suggested the following diagnostic criteria for tracheomegaly in adults based on chest radiography:[3]

  • Adult Males: Tracheal transverse diameter > 25 mm and sagittal diameter > 27 mm.
  • Adult Females: Trachel transverse diameter > 21 mm and sagittal diameter > 23 mm.


The term "Mounier-Kuhn syndrome" derives from the characterization of the condition by Mounier-Kuhn in 1932, while the name "tracheobronchomegaly" was introduced by Katz et al. in 1962.[4][5][6]


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