Table 3.

Positive predictive values of individual axillary ultrasound features in detecting pathologically positive axillary lymph nodes.

Ultrasound features (n = 383)	N	TP	FP	PPV %
Cortical thickening > 3mm	42	29	13	69.1
Loss of fatty hilum	88	73	15	83.0
Hypoechoic solid node	132	101	31	76.5
Mass Like Appearance	87	71	16	81.6
Round shape	22	19	3	87.0
Lymph node size > 5 mm	130	100	30	76.9

FP = false positive, PPV = positive predictive value, TP = true positive.