Comparative analysis of conventional ultrasound and shear wave elastography features in primary breast diffuse large B-cell lymphoma

Table 2 Conventional ultrasound features of primary breast diffuse large B-cell lymphoma lesions

Feature	PB-DLBCL (n = 32), n (%)	Benign (n = 32), n (%)	P value	AUC
Shape			< 0.001	0.799
Round/oval	5 (15.6)	24 (75)
Irregular	27 (84.4)	8 (25)
Margin			< 0.001	0.750
Circumscribed	8 (25)	28 (87.5)
Microlobulated/spiculated/indistinct/angular	24 (75)	4 (12.5)
Orientation			0.003	0.637
Parallel	21 (65.6)	30 (93.8)
Non-parallel	11 (34.4)	2 (6.3)
Echo			< 0.001	0.688
Anechoic/hyperechoic/isoechoic	4 (12.5)	16 (50)
Hypoechoic	28 (87.5)	16 (50)
Posterior acoustic features			< 0.001	0.812
None/shadowing/combined pattern	11 (34.4)	26 (81.3)
Enhancement	21 (65.6)	6 (18.8)
Calcification			> 0.05	NA
Present	2 (6.3)	4 (12.5)
Absent	30 (93.8)	28 (87.5)
Vascularity			< 0.001	0.612
Avascular	10 (31.3)	18 (56.3)
Hypovascular	12 (37.5)	14 (43.8)
Hypervascular	10 (31.3)	0 (0)

PB-DLBCL: Primary breast diffuse large B-cell lymphoma; AUC: Area under the curve; NA: Not available.