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Comparison of metastasis incidence of axillary lymph nodes with a different number of SLNs by SPECT/CT.
| No. of SLNs | Axillary lymph node status | Total | Metastasis incidence | χ 2 | P value | |
|---|---|---|---|---|---|---|
| Metastasis | Nonmetastasis | |||||
| SPECT ≤ 2 | 119 | 218 | 337 | 35% | 21.3 | ＜0.001 |
| SPECT > 2 | 23 | 131 | 154 | 15% | ||
