Sentinel lymph node metastasis after neoadjuvant treatment in breast cancer: Any size matters?

Table 1 False negative rates in the randomized trials of sentinel lymph node after neoadjuvant chemotherapy in patients with axillary metastasis before neoadjuvant chemotherapy

	ACOSOG Z1071	SENTINA	FN SNAC
No. of patients	756	592	153
FNR with 1 SLN	31.5%	24.3%	18.2%
FNR with > 2 SLNs	12.6%	9.6%	4.9%
FNR with single tracer	20.3%	16%	16%
FNR with dual tracer	10.8%	8.6%	5.2%
FNR with N0(i+) as positive	8.7%	-	8.4%

FNR: False negative rates; SLN: Sentinel lymph node.