Clustered Cystic Changes in Long-Term Follow-Up Thin-Section Computed Tomographic Findings in Fibrotic Nonspecific Interstitial Pneumonia

<div>Sequential HRCT scans in a 52-year-old woman with fibrotic NSIP. (a) The initial CT scan shows reticular opacities with traction bronchiectasis. (b) Follow-up scan obtained 40 months later shows coarse reticular opacities with low attenuation areas and traction bronchiectasis. Most of the polygonal areas are not typical cystic airspaces. Pulmonary vessels can be seen in some polygonal areas. Air space enlargement may be occurring regularly.</div>

Canadian Respiratory Journal

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Figure 4

Figure 4: Clustered Cystic Changes in Long-Term Follow-Up Thin-Section Computed Tomographic Findings in Fibrotic Nonspecific Interstitial Pneumonia 