Table 2.
Mammography findings of breast cancer patients with positive SLNs and univariate analysis of NSLN metastases
| Mammography findings | Total | Negative NSLN | Positive NSLN | Ρ |
|---|---|---|---|---|
| (n = 163) | (n = 108) | (n = 55) | ||
| Breast density | ||||
| 1 | 27 | 17 | 10 | 0.527 |
| 2 | 37 | 28 | 9 | |
| 3 | 64 | 42 | 22 | |
| 4 | 35 | 21 | 14 | |
| Result | ||||
| Normal (BI-RADS 1 or 2) | 12 | 11 | 1 | 0.061 |
| Abnormal | 151 | 97 | 54 | |
| Lesion type | ||||
| Mass | 89 | 61 | 28 | 0.192 |
| Mass with calcifications | 49 | 30 | 19 | |
| Calcification only | 11 | 6 | 5 | |
| Other imaging | 2 | 0 | 2 | |
| Mass shape | ||||
| Oval | 15 | 7 | 8 | 0.095 |
| Irregular | 123 | 84 | 39 | |
| Mass margins | ||||
| Circumscribed | 7 | 6 | 1 | |
| Microlobulated | 8 | 6 | 2 | |
| Obscure | 6 | 3 | 3 | |
| Spiculated | 45 | 24 | 21 | 0.030a |
| Indistinct | 72 | 52 | 20 | |
| Calcifications | ||||
| No | 104 | 73 | 31 | 0.125b |
| Typically benign | 1 | 1 | 0 | |
| Amorphous | 5 | 3 | 2 | |
| Coarse heterogeneous | 6 | 3 | 3 | |
| Fine pleomorphic | 43 | 25 | 18 | |
| Fine linear or branching | 4 | 3 | 1 | |
| Associated features | ||||
| Skin retraction | ||||
| Yes | 5 | 3 | 2 | 1.000 |
| No | 158 | 105 | 53 | |
| Nipple retraction | ||||
| Yes | 12 | 7 | 5 | 0.541 |
| No | 151 | 101 | 50 | |
| Skin thickening | ||||
| Yes | 13 | 7 | 6 | 0.366 |
| No | 150 | 101 | 49 | |
| Mass size, cm | 2.056±0.707 | 2.355±0.773 | 0.024 |
a
Circumscribed, microlobulated, obscure, and indistinct numbers were grouped together to provide adequate numbers for comparison with spiculated numbers.
b
No calcification and typically benign numbers were grouped together to provide adequate numbers for comparison with other types of calcifications.