肝血管肉瘤的MRI表现

目的探讨原发性肝血管肉瘤（HAS）的MRI表现。方法回顾性分析第二军医大学东方肝胆医院2009至2011年经手术病理证实的3例HAS患者的临床、病理和术前MRI表现。结果3例HAS患者包括男性1例和女性2例，年龄35—71岁。所有病灶在MRI的TIWI和T2WI均表现为混合信号强度。所有病灶均存在肿瘤内出血、坏死。GD-DTPA增强扫描后动脉期病灶均为不均匀轻度强化，延迟期病灶表现为持续渐进增强而瘤中心无强化。结论当肝内肿瘤MRI表现为坏死、出血，增强后延迟期病灶渐进强化应考虑到HAS的可能。

Magnetic resonance imaging appearance of hepatic angiosarcoma

Objective To investigate the MRI findings of primary hepatic angiosarcoma （HAS）. Methods Three cases of HAS confirmed by pathologically were retrospectively analyzed between 2009 and 2011 in Shanghai Eastern Hepatobilialy Surgery Hospital of the Second Military Medical University. Results OnMRI, all cases （two females and one male, age from 35 years to 71 years） appeared as hypo mixed hyper signal-intensity both in axial T1WI and T2WI. All lesions had intratnmoral hemorrhage and necrosis. After GD-DTPA injected on arterial phase, three cases demonstrated heterogeneously mild enhanced and continued progressive enhancement on delay phase without enhancement of tumor center. Conclusion When the MR1 representations of intrahepatic tumor show intratumoral hemorrhage and necrosis and continued progressive enhancement on delayed phase, HAS should be considered.