| IPPFE (n = 6) | IPF (n = 28) | p value |
---|---|---|---|
Findings on HRCT | Â | Â | Â |
 Extent score, 0-25 | 9.8 ± 2.6 | 8.8 ± 3.7 | 0.366 |
 Upper lobe predominant distribution, n (%) | 6 (100) | 0 (0) | <0.0001* |
 Reticulation score, 0-3 | 1.3 ± 0.5 | 1.8 ± 0.7 | 0.161 |
 Glass score, 0-3 | 1.5 ± 0.8 | 1.7 ± 0.7 | 0.429 |
 Consolidation score, 0-3 | 1.7 ± 0.8 | 0.3 ± 0.5 | 0.004 |
 Existence of honeycombing, n (%) | 0 (0) | 10 (35.7) | 0.148* |
 Emphysema score, 0-3 | 0 | 0.7 ± 0.9 | 0.078 |
 Pleural thickening, n (%) | 6 (100) | 2 (7.1) | <0.0001* |
Findings on surgical lung biopsy specimens | Â | Â | Â |
 Collagen deposition score, 0-3 | 2.0 ± 0 | 2.4 ± 0.8 | 0.175 |
 Existence of microscopic honeycombing, n (%) | 1 (16.7) | 17 (60.7) | 0.078* |
 Organizing pneumonia score, 0-3 | 1.8 ± 0.4 | 0.6 ± 0.7 | 0.003 |
 Cellularity score in interstitium, 0-3 | 1.5 ± 0.5 | 1.3 ± 0.6 | 0.456 |
 Lymphoid hyperplasia, n (%) | 0 (0) | 0 (0) | NA. |
 Pleural fibrosis, pleuritis, n (%) | 5 (83.3) | 0 (0) | <0.0001* |