Table 4.
Characteristics of patients with a false-negative result following sentinel lymph node (SLN) biopsy in the clinically negative node group after neoadjuvant chemotherapy (NAC)
| Patient No. | Age (yr) | Tumor size before NAC (cm) | Regimen of chemotherapy | Type of surgery | Pathologic tumor size (cm) | No. of removed SLNs | Fraction of axillary metastasis | Size of a metastatic node (mm) |
|---|---|---|---|---|---|---|---|---|
| 1 | 49 | 3.6 | AT | Mastectomy | 2 | 2 | 1/15 | 2 |
| 2 | 39 | 2.4 | CAF | Mastectomy | 2.2 | 6 | 1/22 | 2.2 |
| 3 | 45 | 4.0 | AT | Mastectomy | CR | 1 | 1/10 | 2.1 |
| 4 | 59 | 1.6 | CAF | Mastectomy | CR | 2 | 1/13 | 3 |
AT, adriamycin-docetaxel; CAF, cyclophosphamide-adriamycin-5-fluorouracil; CR, complete response.