Cystic lung disease

Cystic lung disease can occur in a number pathological conditions.  


A lung cyst is an air filled structure with perceptible wall typically 1 mm in thickness but can be up to 4 mm. The diameter of a lung cyst is usually <1 cm. By definition lung cyst can be distinguished from cavity  where the wall is greater than 4 mm. However, in practice clear separation of the two entity can sometimes be difficult.

The differential diagnosis of cystic lung disease therefore overlap with lung disease with multiple cavities 1.


Primary pulmonary disease where diffuse cysts are the predominate feature:

Acquired cystic lung disease or cysts as a secondary feature of a primary disease:

See also

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Article information

rID: 5020
System: Chest
Section: Gamuts
Synonyms or Alternate Spellings:
  • Cystic lung diseases
  • Cystic pulmonary diseases
  • Cystic pulmonary disease
  • Cystic diseases involving the lung

Cases and figures

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    Case 1: TSC with lymphangioleiomyomatosis
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    Case 2: probable Langerhan's cell histiocytosis
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    Case 3: Birt Hogg Dube syndrome
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    Case 4: light chain deposition disease
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    Multiple, thinned...
    Case 5: LIP
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    Case 6: probable LIP
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    Case 7: cystic bronchiectasis
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