Radiographic data
| Modality | |
| Chest radiograph# | |
| Mottled | 20 (32) |
| Linear densities | 38 (61) |
| Nodular densities | 13 (13) |
| Bullae | 46 (73) |
| Bullae upper localisation | 41 (93) |
| Honeycombing | 7 (12) |
| HRCT¶ | |
| Ground glass | 3 (37) |
| Reticular abnormality | 4 (50) |
| Bullae | 4 (50) |
| Emphysema | 2 (25) |
| Cyst | 2 (25) |
| Honeycombing | 0 (0) |
Data are presented as n (%). HRCT: high-resolution computed tomography. #: n = 63; ¶: n = 8.