Bronchiolar inflammation
| Site of inflammation | No of patients | Grade of inflammation | Bronchioles involved % | Total inflammation score |
| Subepithelial | 19/19 | 2 (1–2) | 60 (22.5–71.5) | 86.8 (27.8–140.3) |
| Adventitial | 19/19 | 1.5 (1.2–1.8) | 54 (46.3–90.5) | 89.6 (58.3–123.2) |
Data are presented as median (confidence interval)