TABLE 1.
Characteristics of patients with lung cancer who were and were not diagnosed by TBB with EBUS‐GS
| Diagnosed by TBB with EBUS‐GS (n = 244) | Undiagnosed by TBB with EBUS‐GS (n = 123) | p‐value | ||
|---|---|---|---|---|
| Age (years) | 72.0 ± 9.8 | 72.6 ± 7.5 | 0.55 | |
| Sex (M/F) | 162/82 | 73/50 | 0.18 | |
| Current or past smoker | 177 (72.5%) | 80 (65.0%) | 0.14 | |
| Size (diameter, mm) | 37.5 ± 17.5 | 30.5 ± 17.3 | <0.01 | |
| Size ≥ 20 mm (diameter) | 218 (89.3%) | 84 (68.3%) | <0.01 | |
| Bronchus sign | 197 (80.7%) | 44 (35.8%) | <0.01 | |
| EBUS image detection | 226 (92.6%) | 57 (46.3%) | <0.01 | |
| Pathology | Adenocarcinoma | 159 (65.2%) | 75 (61.0%) | 0.52 |
| Squamous cell carcinoma | 45 (18.4%) | 29 (23.6%) | 0.25 | |
| NSCLC/NOS | 16 (6.6%) | 2 (1.6%) | <0.05 | |
| Small cell lung cancer | 9 (3.7%) | 4 (3.3%) | 0.83 | |
| Others | 15 (6.1%) | 12 (9.8%) | 0.21 | |
| Lobar distribution | Right upper lobe | 74 (30.3%) | 45 (36.6%) | 0.23 |
| Right middle lobe | 16 (6.6%) | 7 (5.7%) | 0.75 | |
| Right lower lobe | 49 (20.1%) | 32 (26.0%) | 0.20 | |
| Left upper lobe | 66 (27.0%) | 24 (19.5%) | 0.11 | |
| Left lower lobe | 39 (16.0%) | 15 (12.2%) | 0.33 |
Abbreviations: EBUS‐GS, endobronchial ultrasonography with a guide sheath; NSCLC/NOS, non‐small cell lung cancer/not otherwise specified; TBB, transbronchial biopsy.