With R-EBUS | Without R-EBUS (n=38) | ||
Dense sign (n=18) | Blizzard sign (n=29) | ||
Idiopathic pulmonary fibrosis | 0 | 6 (20.7) | 7 (18.4) |
Idiopathic nonspecific interstitial pneumonia | 0 | 0 | 6 (15.8) |
Cryptogenic organising pneumonia | 2 (11.1) | 3 (10.3) | 1 (2.6) |
Acute fibrinous and organising pneumonia | 1 (5.6) | 0 | 0 |
Unclassified interstitial pneumonia | 0 | 4 (13.8) | 8 (21.1) |
Chronic hypersensitivity pneumonitis | 0 | 3 (10.3) | 6 (15.8) |
Connective tissue disease-associated interstitial lung disease | 6 (33.3) | 2 (6.9) | 7 (18.4) |
Smoking-related interstitial lung disease | 0 | 1 (3.4) | 0 |
Chronic eosinophilic pneumonia | 2 (11.1) | 2 (6.9) | 0 |
Sarcoidosis | 1 (5.6) | 0 | 1 (2.6) |
Pulmonary amyloidosis | 0 | 0 | 1 (2.6) |
Eosinophilic granulomatosis with polyangiitis | 1 (5.6) | 0 | 0 |
Drug-induced interstitial lung disease | 1 (5.6) | 3 (10.3) | 0 |
Radiation pneumonitis | 0 | 1 (3.4) | 0 |
Diffuse alveolar haemorrhage | 0 | 1 (3.4) | 0 |
Multicentric Castleman disease | 1 (5.6) | 0 | 1 (2.6) |
Viral pneumonia | 0 | 1 (3.4) | 0 |
Others* | 3 (16.7) | 2 (6.9) | 0 |
Data are presented as numbers (percentages).
*Suspected granulomatous disease, and drug-induced lung disease without obvious histological findings.