Table 2.

Demographic and lesion characteristics

	Benign	Malignant	Statistical significance (p value)
Gender (F/M)	316/0	211/1	NA
Age (y)	49 ± 15 (18–88)	61 ± 12 (27–89)	< 0.0001
Mass size (mm)	14 ± 8.6 (4–60)	18.5 ± 11.9 (5–72)	< 0.0001
BI-RADS			< 0.0001
2	2	0
3	17	0
4	287	115
5	10	96

Mean values of age and tumor size are shown with standard deviations and minimum–maximum intervals in parentheses. Statistical comparison of age, mass size, and BI-RADS between benign and malignant groups was performed using a Wilcoxon rank sum test (last column); a p value < 0.05 was considered to reflect statistical significance

Non applicable