Table 3.

Summary statistics of tumor extension at axillary levels I, II, III

	Axillary level I						Axillary level II						Axillary level III
	Cranial	Caudal	Anterior	Posterior	Lateral	Medial	Cranial	Caudal	Anterior	Posterior	Lateral	Medial	Cranial	Caudal	Anterior	Posterior	Lateral	Medial
Patients with extension at border (%)	83	33	80	30	30	0	33	80	13	30	0	0	3	30	0	10	0	0
Mean (cm)	1.78	0.87	1.27	0.47	0.56	0	1.13	1.36	1.16	0.42	0	0	1.03	1.26	0	0.46	0	0
Standard deviation	1	1.43	0.92	0.58	0.95	n/a	0.74	0.99	0.55	0.23	n/a	n/a	0.5	0.62	n/a	0.35	n/a	n/a
Range (minimum-maximum,)	0.28–3.58	0.32–1.49	0.24–3.58	0.04–1.12	0.25–1.50	n/a	0.26–2.10	0.27–3.86	0.72–2.01	0.25–0.70	n/a	n/a	0.88–1.86	0.63–2.07	n/a	0.25–0.69	n/a	n/a

Abbreviation: n/a = not applicable.