Table 2.

Comparison of axillary lymph node status as assessed with pathology and axillary ultrasound

Axillary ultrasound	SLNB/ALND		Total
	Positive	Negative
Positive	79	13	92
Negative	87	291	378
Total	166	304	470

Sensitivity, specificity, positive predictive value, negative predictive value and accuracy of axillary ultrasound in the detection of lymph node metastases: 47.6% (95%CI 40.1; 55.2), 95.7% (92.8; 97.5); 85.9% (77.3; 91.6); 77% (72.5; 80.9) and 78.7% (74.5; 82.9). SLNB Sentinel lymph node biopsy, ALND Axillary lymph node dissection, CI Confidence interval.