Table 4.
Bronchoscopic features of NTM tracheobronchial invasion.
| Feature | Category | n (%) |
|---|---|---|
| Anatomical Location | ||
| Trachea | 3 (10.3) | |
| Carina | 2 (6.9) | |
| Left main bronchus | 10 (34.5) | |
| Right main bronchus | 6 (20.7) | |
| Left upper lobe | 7 (24.1) | |
| Left lower lobe | 6 (20.7) | |
| Right upper lobe | 9 (31.0) | |
| Right middle lobe* | 8 (27.6) | |
| Right lower lobe | 4 (13.8) | |
| Morphology | ||
| Nodular lesions | 10 (34.5) | |
| Mass/polypoid lesion | 23 (79.3) | |
| Stenosis | 15 (51.7) | |
| Obstruction/occlusion | 6 (20.7) | |
| Surface Characteristics | ||
| Smooth | 2 (6.9) | |
| Rough/friable (bleeds on contact) | 12 (41.4) | |
| Necrotic/gray-yellow exudate | 5 (17.2) | |
| Secretions | ||
| Serous/watery | 9 (31.0) | |
| Mucoid | 2 (6.9) | |
| Purulent | 4 (13.8) | |
Data are presented as n (%). Percentages for morphologic features sum to >100% because lesions often had combined characteristics. For morphology classification: “Nodular lesion” refers to small, circumscribed mucosal elevations (<1 cm); “Mass/polypoid lesion” refers to larger, exophytic lesions (≥1 cm), which may be sessile or pedunculated.