Breast non-mass-like lesions on contrast-enhanced ultrasonography: Feature analysis, breast image reporting and data system classification assessment

Table 3 Contrast-enhanced ultrasound imaging between benign and malignant non-mass-like lesions

Parameter		Pathology, n (%)		Total	χ2	P value
		Benign	Malignant
	Later	5 (17.86)	0 (0.00)	5 (9.80)
Enhancement time	Synchronous	17 (60.71)	9 (39.13)	26 (51.98)	10.270	0.006b
	Earlier	6 (21.43)	14 (60.87)	20 (39.22)
	Hypo-enhanced	7 (25.00)	3 (13.04)	10 (19.61)
Enhanced intensity	Iso-enhanced	15 (53.57)	4 (17.39)	19 (37.25)	12.140	0.002b
	Hyper-enhanced	6 (21.43)	16 (69.57)	22 (43.14)
	Diffuse enhancement	20 (71.43)	18 (78.26)	38 (74.51)
Enhancement direction	Centripetal	4 (14.29)	2 (8.70)	6 (11.76)	0.429	0.807
	Centrifugal	4 (14.29)	3 (13.04)	7 (13.73)
Enhancement mode	Homogeneous	22 (78.57)	15 (65.22)	37 (72.55)	1.131	0.288
	Heterogeneous	6 (21.43)	8 (34.78)	14 (27.45)
Lesion range	Without increase	26 (92.86)	8 (34.8)	34 (66.67)	22.288	0.000b
	Increase	2 (7.14)	15 (65.2)	17 (33.33)
Regression time	Later	8 (28.57)	11 (47.83)	19 (37.25)	2.921	0.232
	Synchronous	15 (53.57)	7 (30.43)	22 (43.14)
	Earlier	5 (17.86)	5 (21.74)	10 (19.61)
Peripheral blood vessels	No	21 (75)	11 (47.83)	32 (62.75)	3.989	0.046a
	Yes	7 (25)	12 (52.17)	19 (37.25)

^aP < 0.05;

^bP < 0.01.