Table 2.
Univariate analysis for level VII lymph node metastasis in 275 PTC patients
| Variablesa | Level VII lymph node metastasis | P-value | |
|---|---|---|---|
| Present | Absent | ||
| Gender, n (%) | 79 | 196 | |
| Male | 22 (34.92) | 41 (65.08) | 0.267 |
| Female | 57 (26.89) | 155 (73.11) | |
| Age in years, mean (SD) | 43.47 (13.32) | 47.12 (11.33) | 0.034 |
| Poor differentiation, n (%) | 0.001 | ||
| Yes | 7 (87.5) | 1 (12.5) | |
| No | 72 (26.97) | 195 (73.03) | |
| Multifocality, n (%) | 0.007 | ||
| Yes | 43 (37.72) | 71 (62.28) | |
| No | 36 (22.36) | 125 (77.64) | |
| PTMC, n (%) | < 0.001 | ||
| Yes | 36 (20.57) | 139 (79.43) | |
| No | 43 (43.0) | 57 (57.0) | |
| US (+) LNM, n (%) | < 0.001 | ||
| Yes | 43 (58.11) | 31 (41.89) | |
| No | 36 (17.91) | 165 (82.09) | |
| Location of US (+) LNM, n (%) | 0.155 | ||
| Lateral Compartment | 24 (50.0) | 24 (50.0) | |
| Central Compartment | 3 (75.0) | 1 (25.0) | |
| Both | 16 (72.73) | 6 (27.27) | |
| Gross lymph node metastasis, n (%) | < 0.001 | ||
| Yes | 53 (41.09) | 76 (58.91) | |
| No | 26 (17.81) | 120 (82.19) | |
| Extrathyroidal extension, n (%) | 0.003 | ||
| Yes | 26 (45.61) | 31 (54.39) | |
| No | 53 (24.31) | 165 (75.69) | |
| Hashimoto thyroiditis, n (%) | 0.128 | ||
| Yes | 15 (21.13) | 56 (78.87) | |
| No | 64 (31.37) | 140 (68.63) | |
| Location of primary carcinoma, n (%) | 0.005 | ||
| Upper third | 14 (16.09) | 73 (83.91) | |
| Middle third | 29 (35.37) | 53 (64.63) | |
| Lower third | 36 (33.96) | 70 (66.04) | |
aContinuous variables are presented as means and standard deviations (SD); categorical variables are presented as n (%). PTC papillary thyroid carcinoma, PTMC papillary thyroid microcarcinoma, US (+) LNM ultrasonography-positive lymph node metastasis