2. Expressions of six molecular markers in primary (T) and metastatic lymph nodes (N).
| Markers | n (%) | |
| Primary tumor | Metastatic lymph nodes | |
| CEA, carcinoembryonic antigen; EpCAM, epithelial cell adhesion molecule; NA, non-applicable. | ||
| CEA | ||
| Positive | 52 (75.4) | 34 (69.4) |
| Negative | 17 (24.6) | 15 (30.6) |
| NA | 2 | 22 |
| E-cadherin | ||
| Positive | 67 (97.1) | 48 (98.0) |
| Negative | 2 (2.9) | 1 (2.0) |
| NA | 2 | 22 |
| EpCAM | ||
| Positive | 65 (100) | 61 (98.4) |
| Negative | 0 (0) | 1 (1.6) |
| NA | 6 | 9 |
| P-cadherin | ||
| Positive | 62 (89.9) | 41 (83.7) |
| Negative | 7 (10.1) | 8 (16.3) |
| NA | 2 | 22 |
| CD44v6 | ||
| Positive | 7 (11.1) | 0 (0) |
| Negative | 56 (89.9) | 47 (100) |
| NA | 8 | 24 |
| c-erbB2 | ||
| Positive | 5 (7.2) | 6 (13.0) |
| Negative | 64 (92.8) | 40 (87.0) |
| NA | 2 | 25 |