Reasons for not meeting 2014 NIH-CC for BOS (pulmonary cGVHD)
| Reason . | No. of instances* . |
|---|---|
| CT scan of lungs with nonspecific features and lack of BO features (air trapping, airway thickening, bronchiectasis) | 6 |
| PFT not performed because of young age | 5 |
| Investigations (eg, BAL) not performed to rule out infection | 4 |
| PFT did not meet American Thoracic Society guidelines for reliability because of patient effort | 2 |
| Too unwell to perform PFTs | 1 |
| PFTs met some, but not all, criteria for BOS | 1 |
| Reason . | No. of instances* . |
|---|---|
| CT scan of lungs with nonspecific features and lack of BO features (air trapping, airway thickening, bronchiectasis) | 6 |
| PFT not performed because of young age | 5 |
| Investigations (eg, BAL) not performed to rule out infection | 4 |
| PFT did not meet American Thoracic Society guidelines for reliability because of patient effort | 2 |
| Too unwell to perform PFTs | 1 |
| PFTs met some, but not all, criteria for BOS | 1 |
BAL, bronchoalveolar lavage.
In many instances, >1 reason could be identified in an individual patient for not meeting the 2014 NIH-CC for BOS (pulmonary cGVHD).