Table 2 Data on target lesions
Total | No pneumothorax | Pneumothorax | |
|---|---|---|---|
n = 916 | n = 886 | n = 30 | |
Lesion size | |||
Median (IQR) mm | 23.08 (17.1–32.8) | 23.13 (17.1–32.8) | 20.38 (17.4–33.2) |
< 20 mm (long diameter) | 338 (36.9%) | 325 (36.7%) | 13 (43.3%) |
Findings of thin-section CT | |||
GGN* | 53 (5.8%) | 47 (5.3%) | 6 (20.0%) |
Solid | 863 (94.2%) | 839 (94.5%) | 24 (80.0%) |
Location | |||
Right upper lobe or left upper segments | 448 (48.9%) | 440 (49.7%) | 8 (26.7%) |
Middle lobe or lingula | 127 (13.9%) | 119 (13.4%) | 8 (26.7%) |
Lower lobe | 341 (37.2%) | 327 (36.9%) | 14 (46.7%) |
Segments located in the sagittal direction** | 214 (23.4%) | 201 (22.7%) | 13 (43.3%) |
CT bronchus sign*** | |||
A | 518 (56.7%) | 503 (56.7%) | 15 (50.0%) |
B | 336 (36.7%) | 323 (36.5%) | 13 (43.3%) |
C | 62 (6.8%) | 60 (6.8%) | 2 (6.7%) |
Pleural involvement | |||
Contact or indentation | 344 (37.5%) | 333 (37.6%) | 11 (36.7%) |
No contact | 572 (62.5%) | 553 (62.4%) | 19 (63.3%) |
Fluoroscopic view | |||
Visible | 643 (70.2%) | 627 (70.8%) | 16 (53.3%) |
Not visible | 273 (29.8%) | 259 (29.2%) | 14 (46.7%) |
EBUS findings | |||
Within | 558 (60.9%) | 543 (61.2%) | 15 (53.3%) |
Adjacent to | 236 (25.8%) | 227 (25.6%) | 9 (30.0%) |
Blizzard sign and mixed-blizzard sign | 97 (10.5%) | 92 (10.3%) | 5 (16.7%) |
Outside | 25 (2.7%) | 24 (2.7%) | 1 (3.3%) |
Bronchoscopic diagnosis | |||
Malignancy | 647 (70.6%) | 633 (71.4%) | 14 (46.7%) |
Infection | 55 (6.0%) | 50 (5.6%) | 5 (16.7%) |
Organizing pneumonia | 45 (4.9%) | 45 (5.1%) | 0 (0.0%) |
Other inflammatory lesions | 61 (6.7%) | 60 (6.7%) | 1 (3.3%) |
Undiagnosed | 108 (11.8%) | 98 (12.1%) | 10 (33.3%) |
Final diagnosis | |||
Lung cancer or other malignancy | 651 (71.1%) | 634 (71.6%) | 17 (56.7%) |
Infectious disease | 56 (6.1%) | 51 (5.7%) | 5 (16.7%) |
Inflammatory disease | 121 (13.2%) | 116 (13.1%) | 5 (16.7%) |
Other benign disease | 88 (9.6%) | 85 (9.6%) | 3 (10.0%) |