Table 2: Mass characteristics on ultrasound.

Mass CharacteristicsNumber of lesions

Shape
Oval33
Round4
Irregular24

Margin
Circumscribed18
Indistinct15
Irregular15
Microlobulated9
Angular4

Echo Pattern
Hypoechoic54
Heterogeneous4
Complex cystic2
Isoechoic1

Posterior Features
Shadowing15
Enhancement2
None44

Total61