Number | 400 |
Mean size (cm) | 2.6 ± 3.1 |
B-mode, echogenicity | |
Hyperechoic | 363 (91%) |
Isoechoic or hypoechoic | 37 (9%) |
Vascularity assessed by color Doppler imaging | |
No intralesional vessels | 379 (95%) |
Intralesional vessels (hypervascular) | 21 (5%) |
Peripheral nodular contrast enhancement | 328 (82%) |
Strong homogenous arterial enhancement | 31 (8%) |
No specific enhancement pattern or not determinable (eg, due to size of the lesion, solitary fibrotic nodule) | 41 (10%) |
Complete iris diaphragm phenomenon | 320 (80%) |
Incomplete iris diaphragm phenomenon | 80 (20%) |
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