Diagnostic Performance and Additional Value of Elastosonography in Focal Breast Lesions: Statistical Correlation between Size-Dependant Strain Index Measurements, Multimodality-BI-RADS Score, and Histopathology in a Clinical Routine Setting

Table 2

Elasticity score for individual pathology and comparison between malignant and benign disease.

Histology	𝑛=	Mean SI^1	SD^2	Median SI
Ductal carcinoma	23	17.43	(±13.80)	9.40
Lobular carcinoma	4	45.13	(±33.06)	59.00
Mucinous carcinoma	2	7.00	(±4.24)	7.00
Adenocarcinoma	1	1.60		1.60
Papillary carcinoma	1	6.47		6.47
Malignant	31	18.69	(±17.56)	9.40
Fibrocystic mastopathy	7	15.27	(±18.56)	2.40
Adenosis	7	14.35	(±22.86)	6.10
Fibroadenoma	5	15.57	(±27.70)	4.57
Scar	2	1.85	(±0.92)	1.85
Fatty necrosis	1	10.80		10.80
Mastitis	1	2.00		2.00
Normal	56	2.82	(±5.25)	1.74
Benign	79	5.82	(±12.39)	2.20

1SI: strain index.
²SD: standard deviation.