Table 2. Clinicopathologic characteristics according to resected lymph nodes group and metastasized lymph nodes group.
| Variables | Resected lymph nodes | Metastasized lymph nodes | ||||
|---|---|---|---|---|---|---|
| ≤10 | >10 | P value | ≤10 | >10 | P value | |
| Age (years) | 0.118 | 0.636 | ||||
| ≤50 | 30 (40.0) | 44 (52.4) | 63 (47.4) | 11 (42.3) | ||
| >50 | 45 (60.0) | 40 (47.6) | 70 (52.6) | 15 (57.7) | ||
| Gender | 0.036 | 0.013 | ||||
| Male | 26 (34.7) | 43 (51.2) | 52 (39.1) | 17 (65.4) | ||
| Female | 49 (65.3) | 41 (48.8) | 81 (60.9) | 9 (34.6) | ||
| Tumor size (cm) | 0.004 | 0.027 | ||||
| ≤2 cm | 62 (82.7) | 52 (61.9) | 100 (75.2) | 14 (53.8) | ||
| >2 cm | 13 (17.3) | 32 (38.1) | 33 (24.8) | 12 (46.2) | ||
| Multifocality | 0.016 | 0.021 | ||||
| Yes | 14 (18.7) | 30 (35.7) | 32 (24.1) | 12 (46.2) | ||
| No | 61 (81.3) | 54 (64.3) | 101 (75.9) | 14 (53.8) | ||
| Extrathyroidal extension | 0.059 | 0.076 | ||||
| Yes | 23 (30.7) | 38 (45.2) | 47 (35.3) | 14 (53.8) | ||
| No | 52 (69.3) | 46 (54.8) | 86 (64.7) | 12 (46.2) | ||
| Bilateral | 0.512 | 0.063 | ||||
| Yes | 5 (6.7) | 8 (9.5) | 8 (6.0) | 5 (19.2) | ||
| No | 70 (93.3) | 76 (90.5) | 125 (94.0) | 21 (80.8) | ||
| Preoperative calcitonin | <0.001 | <0.001 | ||||
| ≤300 ng/L | 46 (63.0) | 13 (16.2) | 59 (46.1) | 0 (0.0) | ||
| >300 ng/L | 27 (37.0) | 67 (83.8) | 69 (53.9) | 25 (100.0) | ||
| Pathologic T classification | 0.031 | 0.057 | ||||
| T1/T2 | 51 (68.0) | 43 (51.2) | 83 (62.4) | 11 (42.3) | ||
| T3/T4 | 24 (32.0) | 41 (48.8) | 50 (37.6) | 15 (57.7) | ||
| Pathologic N classification | <0.001 | <0.001 | ||||
| pN0 | 58 (77.3) | 12 (14.3) | 70 (52.6) | 0 (0.0) | ||
| pN1a | 15(20.0) | 7 (8.3) | 21 (15.8) | 1 (3.8) | ||
| pN1b | 2 (2.7) | 65 (77.4) | 42 (31.6) | 25 (96.2) | ||
| AJCC clinical stage | <0.001 | <0.001 | ||||
| I/II | 52 (69.3) | 12 (14.3) | 64 (48.1) | 0 (0.0) | ||
| III/IV | 23 (30.7) | 72 (85.7) | 69 (51.9) | 26 (100.0) | ||
| Recurrence | <0.001 | 0.025 | ||||
| Yes | 3 (4.0) | 21 (25.3) | 16 (12.0) | 8 (32.0) | ||
| No | 72 (96.0) | 62 (74.7) | 117 (88.0) | 17 (68.0) | ||
| Death | 0.001 | 0.217 | ||||
| Yes | 0 (0.0) | 12 (14.5) | 8 (6.1) | 4 (15.4) | ||
| No | 75 (100.0) | 71 (85.5) | 124 (93.9) | 22 (84.6) | ||
Note:
The bold part of the P value represents P < 0.05.