pulmonary cyst
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Lymphangioleiomyomatose
der Lunge in der Computertomographie: Multiple, dünnwandige zystoide Veränderungen mit gleichmäßiger Verteilung. Aktuell kein Pneumothorax.
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Birt-Hogg-Dubé
syndrome detected incidentally by asymptomatic bilateral pneumothorax in health screening: a case of a young Japanese woman. Chest CT showed right-sided pneumothorax and multiple cystic lesions in both of the patient"s lungs. Adhesion and thickened visceral pleura were found.
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A practical
approach to cystic lung disease on HRCT. HRCT shows thin walled cysts (arrow) and ground-glass opacities (*) in a patient with LIP. The cysts have a random distribution
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Birt-Hogg-Dubé
syndrome. Multiple lung cysts, often lentiform and subpleural in distribution, typically found in the basal regions of both lungs (1a, 1b) and against the right major fissure (1c).
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Birt-Hogg-Dubé
syndrome. Multiple lung cysts, often lentiform and subpleural in distribution, typically found in the basal regions of both lungs (1a, 1b) and against the right major fissure (1c).
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/5/2/13244_2010_50_Fig13_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. Multiple cystic lesions are present in the left lung (arrow) with a small pneumothorax (arrowhead). The patient had a known history a previous oropharyngeal squamous cell carcinoma and the lesions were confirmed as cystic squamous cell carcinoma metastases
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A practical
approach to cystic lung disease on HRCT. Coronal reformat CT thorax shows multiple thin-walled cysts with a lower lobe predominance in a patient with Birt-Hogg-Dube. The cysts have irregular shapes (arrow) and a right apical pneumothorax is present (arrowhead). The patient had a family history of pneumothoraces
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A practical
approach to cystic lung disease on HRCT. HRCT of a patient presenting with a pneumothorax (arrowhead). The only parenchymal abnormality was the presence of a few small cysts, such as the one in the posterior segment of the right upper lobe (arrow). The patient was later diagnosed with LAM
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A practical
approach to cystic lung disease on HRCT. HRCT showing widespread ground glass opacities and several small cysts in a patient with a strong smoking history, who was subsequently diagnosed with DIP
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A practical
approach to cystic lung disease on HRCT. HRCT from a patient with subacute HP. Small cysts are present (arrow) on a background of widespread ground glass opacity and mosaic attenuation in the anterior segment of the left upper lobe (*)
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A practical
approach to cystic lung disease on HRCT. HRCT shows three cysts in the right lung of a patient with LAM. Note the regular conformity of the cysts (arrow) with a thin wall
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Correlative
analysis of lung CT findings in patients with Birt–Hogg–Dubé Syndrome and the occurrence of spontaneous pneumothorax: a preliminary study. Chest CT images of patients diagnosed with BHD syndrome. Multiple well-circumscribed, thin-walled lung cysts of willow-like, oval, and irregular shapes and varying sizes can be seen. The lung cysts are in the mediastinal subpleural and interlobular fissure areas in both lungs and grow near the mediastinum. Figures 1 and 2 are images of the same patient before (Fig. 1) and during (Fig. 2) pneumothorax
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/4/3/13244_2010_50_Fig5_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. HRCT of a patient with LAM and right pneumothorax. Coronal reformat demonstrates cystic involvement of the juxtraphrenic recesses, but sparing of the extreme apices
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/4/2/13244_2010_50_Fig4_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. HRCT of a patient with LCH. Multiple cysts are present of varying sizes and shapes (arrow)
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/4/1/13244_2010_50_Fig3_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. HRCT demonstrates sparing of the medial segment of the middle lobe and lingula in a patient with LCH (arrows)
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/3/9/13244_2010_50_Fig1_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. HRCT image showing thin-walled cysts in the right lung (arrow) in a patient with LAM
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/4/0/13244_2010_50_Fig2_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. HRCT shows a thick-walled cavity in the left lung adjacent to the oblique fissure (arrow) in a patient with a pneumonia. Note the thick wall and ragged edges to the cavity
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/3/6/12880_2022_743_Fig4_HTML_thumb.jpg)
Correlative
analysis of lung CT findings in patients with Birt–Hogg–Dubé Syndrome and the occurrence of spontaneous pneumothorax: a preliminary study. Chest CT images of patients diagnosed with BHD syndrome. Multiple lung cysts ofvarying sizes can be seen. The lung cysts are in the interlobular fissure areas
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/3/5/12880_2022_743_Fig3_HTML_thumb.jpg)
Correlative
analysis of lung CT findings in patients with Birt–Hogg–Dubé Syndrome and the occurrence of spontaneous pneumothorax: a preliminary study. Chest CT images of patients diagnosed with BHD syndrome. Multiple lung cysts of willow-like, oval, and irregular shapes and varying sizes can be seen. The lung cysts are in the mediastinal subpleural and interlobular fissure areas in both lungs and grow near the mediastinum
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/3/4/12880_2022_743_Fig2_HTML_thumb.jpg)
Correlative
analysis of lung CT findings in patients with Birt–Hogg–Dubé Syndrome and the occurrence of spontaneous pneumothorax: a preliminary study. Chest CT images of patients diagnosed with BHD syndrome. Multiple well-circumscribed, thin-walled lung cysts of willow-like, oval, and irregular shapes and varying sizes can be seen. The lung cysts are in the mediastinal subpleural and interlobular fissure areas in both lungs and grow near the mediastinum . Figures 1 and 2 are images of the same patient before (Fig. 1) and during (Fig. 2) pneumothorax
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/3/1/8/1/1/000003_thumb.jpg)
Birt-Hogg-Dubé
syndrome. Multiple lung cysts, often lentiform and subpleural in distribution, typically found in the basal regions of both lungs (1a, 1b) and against the right major fissure (1c).
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/0/4/4/5/13244_2010_50_Fig7_HTML_thumb.jpg)
A practical
approach to cystic lung disease on HRCT. Coronal reformat CT thorax in a patient with CLE demonstrates a cyst with a wall in the left lower lobe (arrow). More classical CLE with a core centrilobular artery and a much less perceptible wall is seen more superiorly (arrowhead)
Pulmonary cysts are round, thin-walled, low attenuation spaces/lucencies in the lung. Lung cysts usually contain air but occasionally also contain fluid or solid material .
Pathology
In contradistinction to all other organs, the term cyst as used in the lung is a misnomer, as it usually refers to a contained focus of gas, not fluid.
Pulmonary cysts can be congenital or acquired. Multiple lung cysts in a child may be associated with an underlying process although this is rare, e.g. pleuropulmonary blastomas .
Differential diagnosis
There are several specific types of thin-walled cystic spaces in the lungs :
- bleb: pleural/subpleural, ≤1-2 cm diameter
- bulla: pleural/subpleural, ≥1-2 cm diameter
- honeycombing: subpleural stacks of cysts, typically 3-10 mm diameter with walls 1-3 mm in thickness
- pneumatocele: usually transient cystic airspace within the lung, usually due to pneumonia or trauma
There are several mimics of pulmonary cysts:
- pulmonary cavity: surrounded by mass, nodule, or consolidation, creating wall thickness >2-4 mm
- emphysema: lucencies without wall and with central vessel
- cystic bronchiectasis: contiguous with other airways
See also
- cystic lung diseases
- bronchogenic cyst
- congenital pulmonary airway malformation
- cystic pulmonary metastases
Siehe auch:
- Pneumatozele
- Langerhanszell-Histiozytose der Lunge
- Bronchogene Zyste
- Lymphangioleiomyomatose
- multiple zystische Lungenherde
- Echinokokkose der Lunge
- Kavernöse Lungenläsionen
- zystische Lungenläsionen bei Kindern
- zystische Lungenmetastasen
- pulmonale Bullae
- pulmonale Blasen (blebs)
und weiter:
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