Table 2.

Baseline characteristics and main lesion measurements of patients with benign and malignant histopathology results

			Benign	Malignant${}^{\mathrm{a}}$	p
Age (years), mean (SD)			47.4 (15.4)	64.5 (15.3)	$<0.{0001}^{\mathrm{b}}$
BIRADS ultrasound classification, counts (percentage)	3		21/68 (30.88 %)	0/77 (0 %)
	4	A	47/68 (69.12 %)	6/77 (7.79 %)
		B	0/68 (0 %)	0/68 (0 %)	$<0.{001}^{\mathrm{c}}$
		C	0/68 (0 %)	58/77 (75.32 %)
	5		0/68 (0 %)	13/ 77 (16.88 %)
Size of the lesion (mm), mean (SD)			15.27 (11.11)	19.6 (13.06)	0.035${}^{\mathrm{b}}$
Depth of the lesion (mm), mean (SD)			8.44 (5.34)	8.85 (5.10)	0.64${}^{\mathrm{b}}$
Elastography result (Kpa), mean (SD)			24.6 (28.47)	101.49 (47.38)	$<0.{0001}^{\mathrm{b}}$

${}^{\mathrm{a}}$ Ductal breast carcinoma (in situ or invasive), invasive lobular carcinoma and/or sarcoma

${}^{\mathrm{b}}$ t test for independent samples

${}^{\mathrm{c}}$ Nonparametric trend test