Table 4. Subgroup analysis of 27 PLLs which were not diagnosed by rEBUS GS TBLB and underwent rEBUS GS TBNA.
| Variables | rEBUS GS TBNA | P value | |
|---|---|---|---|
| Diagnostic (n=5) | Non-diagnostic (n=22) | ||
| Age, years | 71±8 | 68±8 | 0.47 |
| Gender | >0.99 | ||
| Male | 3 (60.0) | 15 (68.2) | |
| Female | 2 (40.0) | 7 (31.8) | |
| Lesion size, mm | 20±4 | 21±14 | 0.83 |
| Distribution by size | >0.99 | ||
| ≤20 mm | 3 (60.0) | 13 (59.1) | |
| >20 mm | 2 (40.0) | 9 (40.9) | |
| Distance from pleura, mm | 21±21 | 13±14 | 0.32 |
| Location of PLL | 0.47 | ||
| Right upper lobe | 1 (20.0) | 7 (31.8) | |
| Right middle lobe | 0 | 1 (4.5) | |
| Right lower lobe | 0 | 3 (13.6) | |
| Left upper lobe | 4 (80.0) | 8 (36.4) | |
| Left lower lobe | 0 | 3 (13.6) | |
| Opacity of PLL on chest CT | 0.58 | ||
| Subsolid opacity | 2 (40.0) | 5 (22.7) | |
| Solid opacity | 3 (60.0) | 17 (77.3) | |
| Cavity formation on chest CT | >0.99 | ||
| Present | 0 | 1 (4.5) | |
| Absent | 5 (100.0) | 21 (95.5) | |
| Bronchus sign on chest CT | 0.30 | ||
| Present | 3 (60.0) | 18 (81.8) | |
| Absent | 2 (40.0) | 4 (18.2) | |
| rEBUS visualization | 0.047 | ||
| Within PLL | 0 | 12 (54.5) | |
| Adjacent to PLL | 5 (100.0) | 10 (45.5) | |
Data are presented as n (%) or mean ± SD. CT, computed tomography; GS, guide sheath; PLL, peripheral lung lesion; rEBUS, radial endobronchial ultrasound; SD, standard deviation; TBLB, transbronchial lung biopsy; TBNA, transbronchial needle aspiration.