Table 1.
Basic characteristics and ultrasound features of the patients.
| Characteristics | Axillary LNM | P value | |
|---|---|---|---|
| Yes | No | ||
| Mean age (y, range) | 56.16 ± 9.43 (34–81) | 57.87 ± 12.52 (26–87) | 0.352 |
| Lesion size ( mm, range) | 31.16 ± 16.02 (9–84) | 23.43 ± 15.30 (6–86) | 0.002* |
| Lesion position | 0.599 | ||
| Right/left, n (%) | 28 (43.8)/36 (56.2) | 47 (48.0)/51 (52.0) | |
| Lesion shape | 0.368 | ||
| Regular/irregular, n (%) | 5 (7.8)/59 (92.2) | 12 (12.2)/86 (87.8) | |
| Margin | 0.616 | ||
| Circumscribed/not circumscribed, n (%) | 22 (34.4)/42 (65.6) | 30 (30.6)/68 (69.4) | |
| Homogeneous echo | 0.536 | ||
| Yes/no, n (%) | 13 (20.3)/51 (79.7) | 24 (24.5)/74 (75.5) | |
| Posterior acoustic features | 0.273 | ||
| Absent/present, n (%) | 37 (57.8)/27 (42.2) | 65 (66.3)/33 (33.7) | |
| Microcalcifications in a lesion | 0.241 | ||
| Absent/present, n (%) | 38 (38.8)/26 (26.5) | 67 (68.4)/31 (31.6) | |
| Taller than wide shape | <0.001* | ||
| No/yes, n (%) | 14 (21.9)/50 (78.1) | 65 (66.3)/33 (33.7) | |
| Internal flow | <0.001* | ||
| Poor/rich, n (%) | 22 (34.4)/42 (65.6) | 73 (74.5)/25 (25.5) | |
LNM lymph node metastasis. *Indicates statistically significant difference.