Table 1.
Univariate analysis of demographic and sonographic data in the training cohort
| Parameter | Reactive LN (n = 58) | Metastatic LN (n = 71) | P value |
|---|---|---|---|
| Sex | 0.989 | ||
| Male | 41 (71) | 49 (69) | |
| Female | 17 (29) | 22 (31) | |
| Age | 38 ± 11 | 38 ± 12 | 0.589 |
| Location | 0.187 | ||
| Lateral | 46 (80) | 49 (69) | |
| Central | 12 (20) | 22 (31) | |
| Size(mm) | 12.33 ± 4.52 | 11.47 ± 4.91 | 0.636 |
| Ratio(L/S) | 0.011 | ||
| ≥ 2 | 43 (74) | 36 (51) | |
| < 2 | 15 (26) | 35 (49) | |
| Shape | 0.137 | ||
| Irregular | 30 (52) | 47 (66) | |
| Oval | 28 (48) | 24 (34) | |
| Border | 0 | ||
| Ill-defined | 15 (26) | 40 (56) | |
| Well-defined | 43 (74) | 31 (44) | |
| Hilum | 0.001 | ||
| Present | 39 (67) | 65 (92) | |
| Absent | 19 (33) | 6 (8) | |
| Echogenicity | 0 | ||
| Isoechoic or hyperechoic | 20 (34) | 52 (73) | |
| Hypoechoic | 38 (66) | 19 (27) | |
| Homogeneity | 0 | ||
| Homogeneous | 36 (62) | 14 (20) | |
| Heterogeneous | 22 (38) | 57 (80) | |
| Cystic necrosis | 0.064 | ||
| Present | 0 (0) | 5 (7) | |
| Absent | 58 (100) | 66 (93) | |
| Calcification | 0.094 | ||
| Absent or macrocalcification | 51 (88) | 53 (75) | |
| Microcalcification | 7 (12) | 18 (25) | |
| CDFI vascular pattern | 0 | ||
| Avascular or hilar type | 48 (83) | 19 (27) | |
| Peripheral or mixed type | 10 (17) | 52 (73) | |
| CDFI vascular index | 0.104 | ||
| 0 | 17 (29) | 13 (18) | |
| 1 | 38 (66) | 46 (65) | |
| 2 | 3 (5) | 10 (14) | |
| 3 | 0 (0) | 2 (3) | |
| SMI vascular pattern | 0 | ||
| Avascular or hilar type | 46 (79) | 4 (6) | |
| Peripheral or mixed type | 12 (21) | 67 (94) | |
| SMI vascular index | 0 | ||
| 0 | 2 (3) | 3 (4) | |
| 1 | 43 (74) | 28 (40) | |
| 2 | 12 (21) | 23 (32) | |
| 3 | 1 (2) | 17 (24) |
LN lymph node, CDFI color Doppler flow imaging, SMI superb microvascular imaging