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肝外胆管腺瘤的MRI表现 预览 被引量:6

MRI findings of extrahepatic biliary adenoma
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摘要 目的探讨肝外胆管腺瘤磁共振表现特征,提高对肝外胆管腺瘤的诊断水平,降低其误诊率。方法回顾性分析经手术和病理证实的5例肝外胆管腺瘤的磁共振资料。结果5例中3例为管状绒毛状腺瘤,1例为绒毛状腺瘤,1例为管状腺瘤;5例中2例伴上皮样内瘤变,1例伴不典型增生;2例位于肝外胆管上段,1例位于肝外胆管中段,2例位于肝外胆管下段;5例病灶均呈偏心膨胀性生长。病灶信号T2wI呈等高信号3例,等信号2例;5例中3例病灶呈不规则形,2例呈类圆形;病灶边缘毛糙3例,边缘光滑2例。5例均伴有胆管扩张,且扩张的胆管壁未见增厚。结论肝外胆管腺瘤多偏心膨胀性生长,无明显胆管壁浸润,病灶边界毛糙,T2wI呈等或等高信号为其相对特征性表现,掌握这些MRI表现有助于提高诊断准确性。 Objective To describe and evaluate the MRI findings of extrahepatic biliary adenoma in order to explore the feasibility of the pre-operation diagnosis by MRI scanning. Methods Clinical data and findings of MRI in five patients with pathologically confirmed extrahepatic biliary adenoma were reviewed retrospectively. Results Three of the five cases were tubular villous adenoma histopathologically,one villous adenoma and one tubular adenoma. Two cases located in sec- tion extrahepatic biliary, one case located in middle extrahepatic biliary, two cases located in hypomere extrahepatic biliar- y. All the masses were demonstrated with a isointensity signal or slightly hyperintense on T2WI. Among five patients, there were three cases with slightly hyperintense, two isointensity. Three lesions were presented with an irregular margin- among all patients, two nearly round margin. Bile duct dilatation was found in five cases, and bile duct walls were smooth. Three cases of such lesions were eccentric expansion change in three cases. Conclusion The relative characteristic MRI findings for diagnosis of extrahepatic biliary adenoma include partial nature of growth, isointensity or slightly hyperintense on T2WI; most than Lesions margin is coarse. It would be helpful for improving the diagnostic accuracy while radiologists are getting aware of the features of extrahepatic biliary adenoma showed on MRI scanning.
作者 李红 宋彬 王庆兵 张蓓 LI Hong , SONG Bin, WANG Qing-bing , ZHANG Bei Department of Radiology, Minhang Distriot Cental Hospital, Ruijin Hospital Qlique , Shanghai 201199, P. R. China
出处 《医学影像学杂志》 2012年第12期2055-2057,共3页 Journal of Medical Imaging
关键词 肝外胆管 腺瘤 磁共振成像 Extrahepatic biliary Adenoma Magnetic resonance imaging
作者简介 李红(1976-),女,江苏省人,毕业于东南大学医学院,本科,主治医师,主要从事医学影像学诊断工作 通讯作者:宋彬副主任医师E—mail:SB72778@189.cn
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同被引文献21

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