Table 1.
Univariate analysis of clinical characteristics and ultrasound features of lymph nodes in metastatic and benign groups.
| Metastasis | Benign | P value | ||
|---|---|---|---|---|
| No. of LNs | 351 | 302 | ||
| No. of patients | 307 | 269 | ||
| Clinical Characteristics | ||||
| Sex | Male | 90 (29.3%) | 64 (23.8%) | 0.135 |
| Female | 217 (70.7%) | 205 (62.2%) | ||
| Age | 39.86 ± 12.13 | 43.46 ± 13.01 | 0.003 | |
| Side | Right | 175 (49.9%) | 130 (43.0%) | 0.082 |
| Left | 176 (51.1%) | 172 (57.0%) | ||
| Location | Central | 57 (16.2%) | 56 (18.5%) | 0.438 |
| Lateral | 294 (83.8%) | 246 (81.5%) | ||
| Ultrasound Features | ||||
| Long-axis diameter | 13.08 ± 7.62 | 11.98 ± 6.62 | 0.096 | |
| >11.55 | 167 (47.6%) | 121 (40.1%) | 0.054 | |
| <11.55 | 184 (52.4%) | 181 (59.9%) | ||
| Short-axis diameter | 6.21 ± 3.24 | 5.40 ± 2.42 | 0.001 | |
| >6.25 | 135 (38.5%) | 78 (25.8%) | 0.001# | |
| <6.25 | 216 (61.5%) | 224 (74.2%) | ||
| L/S | ≤2 | 197 (56.1%) | 145 (48.0%) | 0.039# |
| >2 | 154 (43.9%) | 157 (52.0%) | ||
| Shape | Irregular | 7 (2.0%) | 5 (1.7%) | 0.748 |
| Regular | 344 (98.0%) | 297 (98.3%) | ||
| Border | Unsharp | 4 (1.1%) | 10 (3.3%) | 0.063* |
| Sharp | 347 (98.9%) | 292 (96.7%) | ||
| Hilum | Absent | 258 (73.5%) | 147 (48.7%) | 0.000# |
| Present | 93 (26.5%) | 155 (51.3%) | ||
| Echogenicity | Hyperechoic | 111 (31.6%) | 19 (6.3%) | 0.000# |
| Isoechoic or hypoechoic | 240 (68.4%) | 283 (93.7%) | ||
| Calcifications | Present | 212 (60.4%) | 65 (21.5%) | 0.000# |
| Absent | 139 (39.6%) | 237 (78.5%) | ||
| Cystic change | Present | 53 (15.1%) | 1 (0.3%) | 0.000*# |
| Absent | 298 (84.9%) | 301 (99.7%) | ||
| Vascularity pattern | Abnormal flow | 154 (43.9%) | 34 (11.3%) | 0.000# |
| Hilar flow or absent flow | 197 (56.1%) | 268 (88.7%) | ||
*Using Fisher’s exact tests, others using chi-square (X2),# enrolled into Multivariate Logistic Regression.