肝脏炎性假瘤的MRI诊断

目的:探讨MRI在肝脏炎性假瘤(IPL)诊断中的价值。材料与方法:回顾性分析经临床病理证实的16例肝脏炎性假瘤患者的MRI检查资料,并对其MRI表现和病理学检查结果进行对照。结果:16例共发现18个病灶。T1WI上13个病灶为低信号,5个为等信号;T2WI上14个病灶呈高或稍高信号,3个病灶为等信号。多期动态增强扫描显示IPL动脉期大多数病灶无明显强化,3个病灶可见强化;门静脉期和延迟期可见不同程度强化,强化方式多样,常见强化形式为周边不规则环形强化或结节状强化,或呈分隔样强化,且强化持续时间较长。结论:MRI多期动态增强扫描反映了IPL的病理学特征,对IPL的诊断与鉴别诊断具有重要价值。

MRI Diagnosis of Inflammatory Pseudotumor of the Liver

Purpose： The MRI imaging features of 16 IPL patients proved by pathology were retrospectively reviewed and correlated with pathologic findings. Materials and Methods： The MRI imaging features of 16 IPL patients proved by pa- thology were retrospectively reviewed and correlated with pathologic findings. Results： There were 18 lesions detected in 16 cases. 13 lesions were hypointense and 5 lesions were isointense on T1WI, 14 lesions were depicted or slightly hyperintense and 3 lesions were isointense on T2WI. On dynamic enhanced MRI, no obvious enhancement was seen during arterial phase except 3 lessons, and while several patterns of enhancement were demonstrated during portal venous phase and delayed phase. The model of enhancement was multiplicity, including peripheral enhancement, nodular enhancement and septal enhancenment and enhancement time was longer in IPL. Conclusion： Dynamic enhanced MR1 can reflect the pathologic features of IPL, and which is valuable for the differentiation diagnosis.