Table 1.

Clinical and conventional B-mode ultrasound features

Features	benign	malignant	P value
Number of nodules	38	59	/
Gender(male/female)	8/30	20/38	0.137
Age(year)	48.8±15.3	45.4±12.7	0.239
Size/longest diameter(mm)	9.8±4.3	9.6±5.1	0.850
Solid/mixed	36/2	58/1	0.322
Marked Hypoechogenicity	14	34	0.046
Microcalcification	12	36	0.005
Macrocalcification	9	10	0.438
Obscure border	5	29	0.001
Irregular margin	8	26	0.042
Taller-than- wide shape	4	18	0.022