快速充盈型肝海绵状血管瘤的CT表现及特点.doc

快速充盈型肝海绵状血管瘤的CT表现及特点
【摘要】目的探讨快速充盈型肝海绵状血管瘤(ffHCH)的动态增强CT表现特征。方法回顾性分析13例共15个ffHCH病灶的强CT资料,观察病灶部位、大小、三期动态(动脉期、门静脉期及延迟期)强化模式,以及是否伴有动脉门静脉分流(APS)、假包膜征及肝包膜回缩征等表现。结果 ffHCH病灶好发于肝右叶近包膜下区域;直径(±) cm;动脉期病灶完全强化呈高密度,病灶平均CT值明显高于同期正常肝实质(P<);门静脉期病灶呈高或等密度,病灶平均CT值仍明显高于肝实质(P<);延迟期病灶呈等或稍高密度,但其强化程度与肝实质无统计学意义(P>);部分病灶可见APS,%;无假包膜征及肝包膜回缩征。结论 ffHCH三期增强CT表现在病灶位置、大小、增强方式和伴发APS等方面有一定特征,有助于该病的诊断。
【关键词】海绵状血管瘤,肝;体层摄影术,X线计算机;诊断

Abstract: Objective To investigate CT imaging features of flash filling hepatic cavenous hemangioma (ffHCH) under triphasic contrastenhanced CT scan. Methods The CT imaging features of 15 ffHCHs in 13 patients were retrospectively reviewed. Lesion location, size, dynamical triphasic (hepatic arterial phase, portal venous and delayed phases) enhancement pattern, prevalence of arterio
portal shunt (APS), pseudocapsule and hepatic capsule retraction were evaluated. Results The ffCHC lesions were prominently located in the subcapsular region of the right liver lobe, and were (±) cm in average diameter. The images of the lesions plete enhancement in the hepatic artery phase, and the mean CT value of the lesions was significant higher than that of normal liver tissue (P<). In the portal venous phase, the lesion images showed hyper or isodensity, with a significant increase in mean CT pared with the normal liver tissue imaging (P<). In