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High-Resolution CT of Asbestosis and Idiopathic Pulmonary Fibrosis

Masanori Akira1, Satoru Yamamoto2, Yoshikazu Inoue3 and Mitsunori Sakatani3

1 Department of Radiology, National Kinki Chuo Hospital for Chest Disease, 1180 Nagasone-cho, Sakai City, Osaka 591-8555, Japan.
2 Department of Pathology, National Kinki Chuo Hospital for Chest Disease, Osaka 591-8555, Japan.
3 Department of Internal Medicine, National Kinki Chuo Hospital for Chest Disease, Osaka 591-8555, Japan.



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  		Fig. 1. —65-year-old man with asbestosis. High-resolution CT scan shows subpleural dotlike or branching opacities (arrows) located a few millimeters away from pleura. Note paraseptal emphysema (arrowheads).

 


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  		Fig. 2. —54-year-old man with asbestosis. High-resolution CT scan obtained with patient prone shows subpleural lines (arrows) parallel to inner chest wall. Note subpleural dotlike opacities (arrowheads).

 


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  		Fig. 3. —58-year-old man with idiopathic pulmonary fibrosis. High-resolution CT scan shows intralobular bronchiole. Note dilated bronchiole (arrow) in subpleural region.

 


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  		Fig. 4. —High-resolution CT scan obtained in 81-year-old man with asbestosis shows mosaic perfusion.

 


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  		Fig. 5. —64-year-old man with idiopathic pulmonary fibrosis. High-resolution CT scan shows bronchiolectasis within consolidation. Note fibrotic consolidation (arrowheads) in subpleural region. Also note dilated bronchioles, indicating bronchiolectasis (arrows) within consolidation.

 


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  		Fig. 6. —69-year-old woman with asbestosis. High-resolution CT scan of asbestosis shows fibrotic consolidation (arrowheads) seen in the subpleural region. Air bronchiogram and air bronchiologram are not seen within consolidation.

 


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  		Fig. 7. —Diagram of high-resolution CT findings in subpleural secondary lobules of lungs in idiopathic pulmonary fibrosis and asbestosis. Shaded areas represent prominent fibrosis.

 

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