Table 2.
PD-L1 expression in MPE cell blocks and matched histology samples
| Type | Tumor proportion score of PD-L1 | Total (n) | Coincidence rate (%) | P value | ||
|---|---|---|---|---|---|---|
| < 1%, n (%) | 1–49%, n (%) | ≥50%, n (%) | ||||
| MPE cell block | 23 (22.8) | 38 (37.6) | 40 (39.6) | 101 | 85.1 | 0.005a |
| Histology sample | 26 (25.7) | 44 (43.6) | 31 (30.7) | 101 | ||
| Surgical resection | 3 (27.3) | 5 (45.5) | 3 (27.3) | 11 | 72.7 | 0.564 |
| Biopsy | 20 (24.1) | 38 (45.8) | 25 (30.1) | 83 | 85.5 | 0.005a |
| EBUS-TBNA | 3 (42.9) | 1 (14.3) | 3 (42.9) | 7 | 100 | 1.000 |
Abbreviations: PD-L1 programmed cell death ligand-1, MPE malignant pleural effusion; EBUS-TBNA, endobronchial ultrasound-guided transbronchial needle aspiration biopsy; astatistically significant