The relationships between expression of PCNA and clinicopathological factors.
| Clinicopathological factors | Cases | Mean ± SD | P value |
|---|---|---|---|
| Histological type | 0.49 | ||
| Squamous cell | 26 | 182.2 ± 67.8 | |
| Adenocarcinomas | 42 | 165.4 ± 65.8 | |
| Differentiation | 0.018 | ||
| Well | 18 | 147.3 ± 61.5 | |
| Moderately | 34 | 160.2 ± 55.5 | |
| Poorly | 16 | 230.6 ± 63.6 | |
| Lymph node metastasis | 0.001 | ||
| Present | 38 | 204.7 ± 58.3 | |
| Absent | 30 | 133.4 ± 52.6 |