Table 2.

Histological findings in surgical lung biopsies from patients with airway-centered interstitial fibrosis (n = 68)

Major findings	n (%)
Airway-centered interstitial fibrosis, n (%)	68 (100%)
Airway inflammation, n (%)	67 (98.5%)
Peribronchiolar metaplasia, n (%)	60 (88.2%)
Other findings (focal)	n (%)
Organizing tissue in airways, n (%)	25 (36.8%)
Giant cells, n (%)	12 (17.6%)
Interstitial heterogeneous fibrosis, n (%)	18 (26.5%)
Interstitial homogeneous fibrosis, n (%)	32 (47.1%)
Fibroblastic foci, n (%)	34 (50.0%)
Microscopic honeycombing, n (%)	20 (29.4%)