Table 2. Comparison of mammographic features.

	Benign (n=26)	Non-benign (n=5)	Total (n=31)	P-value
Side, n (%)				0.344
Right	13 (50)	1 (20)	14 (45.2)
Left	13 (50)	4 (80)	17 (54.8)
Size, n (%)( #)				1
<5 cm	12 (60)	3 (75)	15 (62.5)
5-10 cm	5 (25)	1 (25)	6 (25)
>10 cm	3 (15)	0 (0)	3 (12.5)
Calcification, n (%)				NA
Macrocalcification	0 (0)	0 (0)	0 (0)
Microcalcification	0 (0)	0 (0)	0 (0)
None	26 (100)	5 (100)	31 (100)
Shape				1
Irregular	7 (36.8)	2 (50)	9 (39.1)
Oval	8 (42.1)	1 (25)	9 (39.1)
Round	4 (21.1)	1 (25)	5 (21.7)
Border, n (%)				0.251
Circumscribed	16 (80)	2 (50)	18 (75)
Obscured	3 (15)	1 (25)	4 (16.7)
Microlobulated	0 (0)	0 (0)	0 (0)
Indistinct	1 (5)	1 (25)	2 (8.3)
Spiculated	0 (0)	0 (0)	0 (0)
Density, n (%)				1
High density	12 (60)	2 (50)	14 (58.3)
Equal density	8 (40)	2 (50)	10 (41.7)
Low density	0 (0)	0 (0)	0 (0)
Fat density	0 (0)	0 (0)	0 (0)
Location, n (%)
Upper
Outer	4 (20)	2 (50)	6 (25)	0.251
Mid	1 (5)	0 (0)	1 (4.2)	1
Inner	2 (10)	0 (0)	2 (8.3)	1
Mid
Outer	0 (0)	0 (0)	0 (0)	-
Inner	1 (5)	0 (0)	1 (4.2)	1
Subareolar	3 (15)	0 (0)	3 (12.5)	1
Lower
Outer	1 (5)	0 (0)	1 (4.2)	1
Mid	1 (5)	0 (0)	1 (4.2)	1
Inner	2 (10)	1 (25)	3 (12.5)	0.437
Entire breast	5 (25)	1 (25)	6 (25)	1
Involvement, n (%)				1
<1 quadrant	8 (40)	2 (50)	10 (41.7)
1-2 quadrant	7 (35)	1 (25)	8 (33.3)
>2 quadrant	5 (25)	1 (25)	6 (25)

^# Seven patients were excluded because of dense breast.