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

Figure 3

Sequential HRCT scans in a 74-year-old woman with fibrotic NSIP. (a) Initial CT scan shows traction bronchiectasis and bronchiolectasis (arrows) and cysts. The subpleural cysts seldom protuberate toward the extrapulmonary region. (b) Follow-up scan obtained 25 months later shows that many small cysts are collapsed and dense increased opacities have appeared. Traction bronchiectasis (long arrows) has progressed and some cysts have become larger (arrowheads). There are dense increased opacities in the subpleural region (short arrows).

(a)

(b)