Table 1.

Comparison of pathologic features by tumor B7-H1 expression, n (%)

FeatureTumor B7-H1 expressionP
Negative (n = 233)Positive (n = 73)
2002 TNM classification
    I156 (67.0)24 (32.9)<0.001
    II14 (6.0)5 (6.9)
    III41 (17.6)31 (42.5)
    IV22 (9.4)13 (17.8)
Primary tumor size (cm)
    <5103 (44.2)18 (24.7)<0.001
    5 to <757 (24.5)11 (15.1)
    7 to <1037 (15.9)21 (28.8)
    ≥1036 (15.5)23 (31.5)
Nuclear grade
    131 (13.3)5 (6.9)<0.001
    2133 (57.1)10 (13.7)
    359 (25.3)35 (48.0)
    410 (4.3)23 (31.5)
Coagulative tumor necrosis
    Absent188 (80.7)24 (32.9)<0.001
    Present45 (19.3)49 (67.1)