Table 4. Pathologic nodal stages after neoadjuvant chemotherapy according to BpCR and clinical lymph nodal stage.

Clinical lymph node status		Total		ypN0		ypN1		ypN2
		Number	%	Number	%	Number	%	Number	%
BpCR		1,427
	cN0	307	24.2	304	99.0	4	1.0	0	0.0
	cN1	695	54.8	606	87.2	79	11.4	10	1.4
	cN2	266	21.0	223	83.1	36	13.0	7	3.9
	cN0-2	1,268*		1,133	88.7	118	9.6	17	1.6
Non-BpCR		5,147
	cN0	1,229	28.8	972	79.1	223	18.2	34	2.7
	cN1	2,267	52.2	791	34.9	1,148	50.6	328	14.5
	cN2	765	19.0	242	31.6	293	38.3	230	30.1
	cN0-2	4,261†		2,055	48.2	1,664	39.0	592	13.8
Total
	cN0	1,536	27.8	1,276	83.1	227	14.7	34	2.2
	cN1	2,962	53.6	1,397	47.2	1,227	41.4	338	11.4
	cN2	1,031	18.6	465	45.1	329	31.9	237	23.0
	cN0-2	5,529‡		3,138	56.8	1,782	32.2	609	11.0

BpCR = breast pathologic complete response.

^*Missing data, n = 159; ^†Missing data, n = 886; ^‡Missing data, n = 1,045.