Figure 1From: Do bullae and emphysema increase risk of pneumothorax in silicosis?CT. 1: Large localized pneumothorax in right lung. 2: Mixed alveolar and interstitial fibrosis. 3: Pleural thickening in right lung. 4: Several bullae in right lung. 5: Alveolar and interstitial shadowing. 6: Paraseptal emphysema in anterior segment of left upper lobe.Back to article page