Histological Features | n (%) | n = 43 (%) | |
---|---|---|---|
Interstitial pneumonia | 36 (83.7%) | Centrilobular | 8 (18.6%) |
Diffuse | 11 (25.5%) | ||
Centrilobular and diffuse | 17 (39.5%) | ||
Cellular bronchiolitis (Fig. 4) | 36 (83.7%) | Lymphoplasmacytic | 32 (74.4%) |
Histiocytes and multinucleated giant cells | 4 (9.3%) | ||
Interstitial granulomas (Fig. 5) | 12 (27.9%) | ||
Isolated Multinucleated Giant Cells (IMNGCs) (Fig. 3) | 38 (88.3%) | Interstitial | 14 (32.5%) |
Air spaces | 24 (55.8%) | ||
Organizing Pneumonia (OP) | 4 (9.3%) | ||
Fibrosis | 10 (23.2%) | Interstitial (NSIPa- like) | 4 (9.3%) |
Peribronchiolar | 3 (6.9%) | ||
UIPa-like | 2 (4.6%) |