Table 1.
Summary of the Respiratory System Examinations
| Patient | Age | Chief complaint | Clinical manifestation | Lung function test |
Chest imaging |
||||
|---|---|---|---|---|---|---|---|---|---|
| FEV1 % (L) | FVC % (L) | FEV1/FVC % | FEF 25–75 (L/)s | X-ray | CT | ||||
| 1 | 5 Years | Persistent cough | Recurrent bronchiolitis | 83 (1.01) | 76 (1.09) | 107 | 75 (1.25) | PE-like | Nonspecific |
| 2 | 7 Years | Chronic cough and sputum | Recurrent bronchiolitis and pulmonary infections | 28 (0.43) | 32 (0.57) | 90 | 35 (0.73) | PE | Unilateral paraseptal bulla formation |
| 3 | 58 Days | Abnormal breathing pattern and cyanosis | Respiratory distress | — | Pneumothorax | Bilateral parenchymal bulla formations | |||
CT, computed tomography; FEF25–75, forced expiratory flow between 25% and 75% of FVC; FEV1, forced expiratory volume in the first second; FVC, forced vital capacity; PE, pulmonary emphysema.