Comparison of pathologic features by tumor B7-H1 expression, n (%)
| Feature | Tumor B7-H1 expression | P | |
|---|---|---|---|
| Negative (n = 233) | Positive (n = 73) | ||
| 2002 TNM classification | |||
| I | 156 (67.0) | 24 (32.9) | <0.001 |
| II | 14 (6.0) | 5 (6.9) | |
| III | 41 (17.6) | 31 (42.5) | |
| IV | 22 (9.4) | 13 (17.8) | |
| Primary tumor size (cm) | |||
| <5 | 103 (44.2) | 18 (24.7) | <0.001 |
| 5 to <7 | 57 (24.5) | 11 (15.1) | |
| 7 to <10 | 37 (15.9) | 21 (28.8) | |
| ≥10 | 36 (15.5) | 23 (31.5) | |
| Nuclear grade | |||
| 1 | 31 (13.3) | 5 (6.9) | <0.001 |
| 2 | 133 (57.1) | 10 (13.7) | |
| 3 | 59 (25.3) | 35 (48.0) | |
| 4 | 10 (4.3) | 23 (31.5) | |
| Coagulative tumor necrosis | |||
| Absent | 188 (80.7) | 24 (32.9) | <0.001 |
| Present | 45 (19.3) | 49 (67.1) | |