Table 1.

Comparison of ultrasound characteristics of 117 breast masses with PAS (cases)

	Benign N = 72	Malignant N = 45	χ2	P
Orientation			0.498	0.480
Parallel	24	19
Non-parallel	48	26
Margin			29.915	< 0.001
Circumscribed	52	5
Not circumscribed	20	40
Echo			12.955	< 0.001
Homogeneous	36	4
Heterogeneous	36	41
Calcification			8.353	0.004
Present	53	20
Absent	19	25
Vascularity			12.747	< 0.001
Present	45	11
Absent	27	34