The typical MR isointensity signal with surrounded hepatic parenchyma on T1 and T2-weighted images was seen in only 4 lesions,while atypical signal was encountered in 18 lesions.

• 21个病灶的实质部分在增强后动脉期呈明显均匀强化，在门脉期及延迟期呈等强化或强于肝实质。