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Table 2 Clinicopathological characters of two patient groups by number of CTCs
| Number of CTCs | 0 - 4 | 5 ≤ | P value |
|---|---|---|---|
| Number of subjects | 41 | 24 | |
| TNM: Stage | 0.1586 | ||
| Stage I | 29 | 11 | |
| Stage II | 4 | 2 | |
| Stage III | 4 | 6 | |
| Stage IV | 4 | 5 | |
| TNM: T category | 0.2753 | ||
| T1 | 26 | 10 | |
| T2 | 5 | 3 | |
| T3 | 5 | 4 | |
| T4 | 5 | 7 | |
| TNM: N category | 0.0257 * | ||
| N0 | 27 | 12 | |
| N1 | 5 | 0 | |
| N2 | 4 | 2 | |
| N3 | 5 | 10 | |
| TNM: M category | 0.2121 | ||
| M0 | 37 | 19 | |
| M1 | 4 | 5 | |
| Main histological type | 0.6844 | ||
| Differentiated type | 15 | 10 | |
| Undifferentiated type | 26 | 14 | |
| Lymphatic invasion | 0.3177 | ||
| Lx | 2 | 2 | |
| L0 | 25 | 10 | |
| L1 | 14 | 12 | |
| Venous invasion | 0.1293 | ||
| Vx | 2 | 2 | |
| V0 | 26 | 9 | |
| V1-2 | 13 | 13 | |
| Surgery | 0.2124 | ||
| Curative resection | 38 | 19 | |
| Non-curative resection | 1 | 3 | |
| No resection | 2 | 2 | |
| Postoperative chemotherapy | 0.1672 | ||
| Presence | 15 | 13 | |
| Absence | 26 | 11 |
