Cystic lung disease

Cystic lung disease is an umbrella term used to group the conditions coursing with multiple lung cysts. 


A lung cyst is a gas-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 conventional definition in the literature, a lung cyst can be distinguished from a cavity for which the wall thickness is greater than 4 mm. However, in practice, clear separation of the two entities can sometimes be difficult.

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


Primary pulmonary disease where diffuse cysts are the predominant feature:

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

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Article information

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

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Cases and figures

  • Figure 1: illustration
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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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