Case No. | Clinical | Pulmonary function | HRCT | |||||
Age yrs | Sex | Smoker | FVC | FEV1 | Ratio | DL,CO | ||
1 | 66 | Male | Former | 4.7 (98) | 2.9 (78) | 0.61 | 8.24 (24) | Upper lobe predominance of thin-walled cysts (fig. 1) |
2 | 53 | Male | Former | 4.2 (95) | 1.3 (41) | 0.43 | 5.7 (15) | Bilateral asymmetric bullae (fig. 2) |
3 | 70 | Female | Never | N/A | N/A | N/A | N/A | Scattered upper lobe cysts (fig. 3) |
Data are presented as n or n (%). HRCT: high-resolution computed tomography; FVC: forced vital capacity; FEV1: forced expiratory volume in one second; DL,CO: diffusing capacity of the lung for carbon monoxide; N/A: not applicable.