Table 3

Multidisciplinary discussion diagnoses in patients with dense and blizzard signs who underwent radial endobronchial ultrasonography (R-EBUS) and in patients who did not undergo R-EBUS

With R-EBUSWithout
R-EBUS
(n=38)
Dense sign
(n=18)
Blizzard sign
(n=29)
Idiopathic pulmonary fibrosis06 (20.7)7 (18.4)
Idiopathic nonspecific interstitial pneumonia006 (15.8)
Cryptogenic organising pneumonia2 (11.1)3 (10.3)1 (2.6)
Acute fibrinous and organising pneumonia1 (5.6)00
Unclassified interstitial pneumonia04 (13.8)8 (21.1)
Chronic hypersensitivity pneumonitis03 (10.3)6 (15.8)
Connective tissue disease-associated interstitial lung disease6 (33.3)2 (6.9)7 (18.4)
Smoking-related interstitial lung disease01 (3.4)0
Chronic eosinophilic pneumonia2 (11.1)2 (6.9)0
Sarcoidosis1 (5.6)01 (2.6)
Pulmonary amyloidosis001 (2.6)
Eosinophilic granulomatosis with polyangiitis1 (5.6)00
Drug-induced interstitial lung disease1 (5.6)3 (10.3)0
Radiation pneumonitis01 (3.4)0
Diffuse alveolar haemorrhage01 (3.4)0
Multicentric Castleman disease1 (5.6)01 (2.6)
Viral pneumonia01 (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.