Table 2

Correlation between B7-DC expression on tumor cells and the clinicopathological characteristics of the 52 non-small cell lung cancers

B7-DC+ expression on tumor cellsP
Low (<8%)High (≥8%)
Patients2626
Age (mean ± SD) (yrs)66.0 ± 1.666.9 ± 2.30.73*
Sex
 Male18170.77
 Female89
Smoking habits
 Smoker16220.06
 Nonsmoker104
Histology
 SCC9120.06
 Adenocarcinoma1714
Differentiation
 Well960.36
 Moderate/poor1720
pT classifications
 T177NS
 T2–41919
pN classifications
 N017140.4
 N1–3912
pStage classifications
 I14110.4
 II–IV1215
CD45+ cells41.8 ± 3.248.8 ± 3.00.11*
  • Abbreviations: SCC, squamous cell carcinoma; NS, nonsignificant.

  • * Student’s paired t test.

  • χ2 test.

  • Percentage of CD45-positive cells per 1000 total nuclei.