Abstract
Lung cysts are commonly seen on computed tomography (CT), and cystic lung diseases show a wide disease spectrum. Thus, correct diagnosis of cystic lung diseases is a challenge for radiologists. As the first diagnostic step, cysts should be distinguished from cavities, bullae, pneumatocele, emphysema, honeycombing, and cystic bronchiectasis. Second, cysts can be categorized as single/localized versus multiple/diffuse. Solitary/localized cysts include incidental cysts and congenital cystic diseases. Multiple/diffuse cysts can be further categorized according to the presence or absence of associated radiologic findings. Multiple/diffuse cysts without associated findings include lymphangioleiomyomatosis and Birt-Hogg-Dubé syndrome. Multiple/diffuse cysts may be associated with ground-glass opacity or small nodules. Multiple/diffuse cysts with nodules include Langerhans cell histiocytosis, cystic metastasis, and amyloidosis. Multiple/diffuse cysts with ground-glass opacity include pneumocystis pneumonia, desquamative interstitial pneumonia, and lymphocytic interstitial pneumonia. This stepwise radiologic diagnostic approach can be helpful in reaching a correct diagnosis for various cystic lung diseases.
Original language | English |
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Pages (from-to) | 1368-1380 |
Number of pages | 13 |
Journal | Korean journal of radiology |
Volume | 20 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2019 Sept |
Keywords
- Birt-Hogg-Dubé syndrome
- Computed tomography
- Histiocytosis
- Langerhans cell
- Lung diseases
- Lymphangioleiomyomatosis
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging