Large volume right pneumothorax with near complete collapse of the right lung. Mild left mediastinal shift. Multiple variably sized, thin walled cystic lesions are diffusely located throughout the lung parenchyma and along the fissural and pleural surfaces. Ruptured cyst is the likely cause for the pneumothorax. Similar, though less extensive, appearance within the left lung. No parenchymal nodules or consolidation identified. Tracheobronchial tree is patent and there is no bronchial thickening. No pleural fluid.
Heart, pericardium and remnant thymic tissue are unremarkable. Normal appearance of the thoracic vessels. No mediastinal or hilar lymphadenopathy
No osseous lesions. Normal appearance of the upper abdominal viscera. No renal lesions.
IMPRESSION
- Large volume right pneumothorax with mild left mediastinal shift likely secondary to a ruptured subpleural bleb.
- Diffuse thin-walled cystic lung disease. Given the patient demographic this may represent lymphangioleiomyomatosis (LAM).