Table 1 Univariate analysis of clinical characteristics and ultrasound features of lymph nodes in the MTC and PTC groups
MTC (n, %) | PTC (n, %) | P value | |
|---|---|---|---|
No. of LNs | 52 | 234 | |
No. of patients | 42 | 222 | |
Clinical characteristics | |||
Gender | |||
Male | 17 (40.48) | 60 (27.03) | 0.079 |
Female | 25 (59.52) | 162 (72.97) | |
Age | 46.81 ± 13.05 | 39.09 ± 12.05 | < 0.001 (Z = − 3.854) |
Location | |||
Lateral | 34 (65.38) | 179 (76.50) | 0.096 |
Central | 18 (34.62) | 55 (23.50) | |
Ultrasound features | |||
Long-axis diameter | 16.43 ± 10.36 | 12.32 ± 6.93 | 0.001 |
> 8.95 | 45 (86.54) | 148 (60.91) | 0.004# |
< 8.95 | 7 (13.46) | 86 (39.09) | |
Short-axis diameter | 8.53 ± 5.79 | 5.86 ± 2.61 | < 0.001 |
> 7.85 | 24 (46.15) | 43 (18.38) | < 0.001# |
< 7.85 | 28 (53.85) | 191 (81.62) | |
L/S | |||
≤ 2 | 30 (57.69) | 133 (56.84) | 0.910 |
> 2 | 22 (42.31) | 101 (43.16) | |
Shape | |||
Irregular | 3 (5.77) | 5 (2.11) | 0.150* |
Regular | 47 (94.23) | 229 (97.89) | |
Border | |||
Unsharp | 2 (3.85) | 4 (2.14) | 0.300* |
Sharp | 50 (96.15) | 230 (97.86) | |
Hilum | |||
Absent | 47 (90.38) | 167 (71.37) | 0.004# |
Present | 5 (9.62) | 67 (28.63) | |
Echogenicity | |||
Hyperechoic | 19 (36.54) | 67 (28.63) | 0.261 |
Isoechoic or hypoechoic | 33 (63.46) | 167(71.37) | |
Calcifications | |||
Present | 11 (21.15) | 139 (59.40) | < 0.001# |
Absent | 41 (78.85) | 95 (40.60) | |
Cystic change | |||
Present | 2 (3.85) | 29 (12.39) | 0.085* |
Absent | 50 (96.15) | 205 (87.61) | |
Vascularity pattern | |||
Abnormal flow | 31 (59.61) | 101 (43.16) | 0.031# |
Hilar flow or absent flow | 21 (40.38) | 133 (56.84) | |