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INSIDE ▶ Introduction ▶ Recommendations ▶ Tables ▶ Figures Idiopathic Pulmonary Fibrosis and Progressive Pulmonary Fibrosis

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17 Figure 8. Airspace Enlargement With Fibrosis (AEF), Also Called Smoking-related Interstitial Fibrosis, in a Cigarette Smoker Axial and sagittal images show clustered asymmetric cysts that are larger and more irregular than typical honeycomb cysts, without traction bronchiectasis or other signs of fibrosis (arrows). Emphysema is also present. AEF is not regarded as a distinct form of IIP, but results from the presence of a greater amount of fibrosis than usually described in the classic definition of emphysema.

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