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Operative time of surgical exploration for internal mammary sentinel lymph nodes (IM SLNs) (n = 40)
| Mean operative time in minutes (range) | P | ||
|---|---|---|---|
| Axillary SLN biopsy/lumpectomy/IM SLN biopsy | 60 | (27–76) | 0.02 |
| Axillary SLN biopsy/lumpectomy/no IM SLN biopsy | 44 | (32–83) | |
| Axillary SLN biopsy/mastectomy/IM SLN biopsy | 72 | (42–104) | 0.8 |
| Axillary SLN biopsy/mastecomy/no IM SLN biopsy | 69 | (30–100) |
