Characteristics of patients with clinical follow-up data
| Symptom change | Improved | Worsened | Stable |
| Patients | 7 (20) | 1 (3) | 27 (77) |
| History of an obstructive lung disease | 4 (57) | 1 (100) | 11 (41) |
| PFT pattern | |||
| Normal | 0 (0) | 0 (0) | 2 (7) |
| Obstructive | 4 (57) | 1 (100) | 15 (56) |
| Restrictive | 1 (14) | 0 (0) | 3 (11) |
| Mixed | 0 (0) | 0 (0) | 1 (4) |
| Nonspecific | 2 (29) | 0 (0) | 6 (22) |
| Positive bronchodilator response | 1 (14) | 1 (100) | 7 (26) |
| Constrictive bronchiolitis on biopsy | 3 (43) | 1 (100) | 11 (41) |
| Treatment given | |||
| Observation | 1 (14) | 0 (0) | 7 (26) |
| Inhaled β2-agonist | 5 (71) | 1 (100) | 9 (33) |
| Inhaled antimuscarinic | 2 (29) | 0 (0) | 6 (22) |
| ICS | 4 (57) | 0 (0) | 10 (37) |
| Octreotide | 4 (57) | 0 (0) | 10 (37) |
Data are presented as n (%). PFT: pulmonary function test; ICS: inhaled corticosteroid.