Table 3 Characteristics of lymph nodes observed on CT and MRI
Characteristic | No. of lymph nodes | P value | |
|---|---|---|---|
Non-metastatic, (n = 31) | Metastatic, (n = 51) | ||
Short-axis diameter (d) | 0.017 | ||
d ≥ 10.0 mm | 1 | 15 | |
8.0 mm ≤ d < 10.0 mm | 10 | 14 | |
5.0 mm ≤ d < 8.0 mm | 11 | 16 | |
3.0 mm ≤ d < 5.0 mm | 9 | 6 | |
Fatty hilum | 4 | 0 | 0.009 |
Ratio of short- to long-axis diameter ≤ 0.4 | 5 | 0 | 0.003 |
Spiculate or obscure margin | 0 | 8 | 0.021 |
Necrosis | 0 | 9 | 0.014 |
Enhancement degree | 0.246 | ||
Mild-moderate | 13 | 15 | |
Remarkable | 18 | 36 | |
Restricted diffusion on DW MRI | 5 | 7 | 0.767 |