Table 2.
Bronchoscopic findings
| Variables | N = 98 |
|---|---|
| Site of lesion | |
| Single lesion | 93 (94.9) |
| Trachea | 62 (63.3) |
| Left main bronchus | 21 (21.4) |
| Right main bronchus | 6 (6.1) |
| Right bronchus intermedius | 1 (1.0) |
| Lobar bronchus | 3 (3.1) |
| Extended lesion | 5 (5.1) |
| Trachea and each or both bronchi | 3 (3.1) |
| Both main bronchi | 2 (2.0) |
| Type of obstruction | |
| Endobronchial lesion | 29 (29.6) |
| Extrinsic compression | 15 (15.3) |
| Mixed lesion | 54 (55.1) |
| Severity of stenosis (Myer and Cotton Grade)a | |
| II | 25 (25.5) |
| III | 55 (56.1) |
| IV | 18 (18.4) |
| Length of MCAOb, mm | 30 (22–38) |
| Fistula between trachea and esophagus | 8 (8.2) |
Data are presented as n (%) or the median (interquartile range)
MCAO malignant central airway obstruction
aCategorization based on the percentage of reduction in cross-sectional area. Grade 1, ≤ 50% lumenal stenosis; Grade II, 51–70% lumenal stenosis; Grade III, 71–99% lumenal stenosis; Grade IV, no lumen
bLength of MCAO was defined as the sum of the length of the obstructive lesions more than Grade II