Table 3. Diagnostic performances of bronchoscopic sampling techniques.
| Sampling technique | Diagnostic yield (%) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall | Size |
Etiology |
Probe location |
|||||||||
| <20 mm (n=45) | >20 mm (n=67) | P value | Benign (n=36) | Malignancy (n=76) | P value | Within (n=92) | Adjacent (n=18) | P value | ||||
| TBB | 70.5 | 62.2 | 76.1 | 0.110 | 63.9 | 73.7 | 0.290 | 76.1 | 50 | 0.02 | ||
| Brushing cell block | 34.8 | 22.2 | 43.3 | 0.020 | 19.4 | 42.1 | 0.020 | 40.2 | 11.1 | 0.018 | ||
| Brushing smear | 62.5 | 55.6 | 67.2 | 0.210 | 27.8 | 78.9 | <0.001 | 69.6 | 33.3 | 0.003 | ||
| Rinsed brushing fluid | 50 | 37.8 | 58.2 | 0.030 | 11.1 | 68.4 | <0.001 | 57.6 | 16.7 | 0.001 | ||
| BALF | 42 | 28.9 | 50.7 | 0.020 | 13.9 | 55.3 | <0.001 | 47.8 | 16.7 | 0.015 | ||
| All techniques | 80.4 | 75.6 | 83.6 | 0.290 | 69.4 | 85.5 | 0.045 | 87 | 55.6 | 0.002 | ||
TBB, transbronchial biopsy; BALF, bronchoalveolar lavage fluid.