Stromal Fibrosis of the Breast: A Spectrum of Benign to Malignant Imaging Appearances

Table 2

Mass characteristics on ultrasound.

Mass Characteristics	Number of lesions
Shape
Oval	33
Round	4
Irregular	24
Margin
Circumscribed	18
Indistinct	15
Irregular	15
Microlobulated	9
Angular	4
Echo Pattern
Hypoechoic	54
Heterogeneous	4
Complex cystic	2
Isoechoic	1
Posterior Features
Shadowing	15
Enhancement	2
None	44
Total	61