Table 2 Comparison of 18F-FDG PET and bronchoscopy in diagnosis of airway involvement in RP
|  | Positive rate (n = 43) | P | |
|---|---|---|---|
PET N (%) | Bronchoscopy N (%) | ||
Trachea | 23 (53.5) | 39 (90.7) | 0.039 |
Main bronchi | 22 (51.2) | 28 (65.1) | 0.348 |
 Left | 19 (44.2) | 26 (60.5) |  > 0.99 |
 Right/bronchus intermediate | 20 (46.5) | 24 (55.8) | 0.542 |
Lobar-segmental (peripheral) bronchi | 34 (79.1) | 28 (65.1) | 0.046 |
 Left | 32 (74.4) | 25 (58.1) | 0.156 |
 Right | 31 (72.1) | 25 (58.1) | 0.014 |