Table 2. Ultrasound features.

Ultrasound features	N
Morphology
Oval, well defined, smooth margins	49
Other	1
Total	50
Consistency
Elastic	13
Soft	8
Solid	17
Total	38
Not described	12
Total	50
Echogenicity
Hipoechogenic	41
Hiperechogenic	5
Total	46
Not described	4
Total	50
Blood flow on us doppler
No	14
Yes	33
Total	47
Not described	3
Total	50
Feeding arterial vessel
Yes	9
Not described	41
Total	50