Table 2

 Histopathological characteristics of surgical lung biopsy specimens in chronic bird fancier’s lung (BFL)

Group A: BOOP-like or cellular NSIP-like lesions(N = 7)Group B: fibrotic NSIP-like lesions(N = 8)Group C: UIP-like lesions(N = 11)
Data are presented as % of positive findings.
BOOP, bronchiolitis obliterans organising pneumonia; NSIP, non-specific interstitial pneumonia; UIP, usual interstitial pneumonia.
*p<0.01, group A v group C; †p<0.01, group A v group B.
Cellular bronchiolitis (%)100.0*50.027.3*
Honeycombing (%)0.0*†75.0†90.9*
Fibroblastic foci (%)0.0*†75.0†100.0*
Lymphoid follicles (%)100.062.563.6
Interstitial infiltrates of chronic inflammatory cells (%)100.087.5100.0
Intraalveolar foamy histiocytes (%)28.625.036.4
Cholesterol clefts (%)57.137.545.5
Multinucleated giant cells (%)71.475.072.7
Granulomas (%)42.925.00.0