摘要
目的探讨肝内胆管乳头状肿瘤（IPNB）的MRI特征性表现，以提高对该肿瘤的鉴别诊断水平。方法回顾性分析经手术病理证实的19例IPNB的MRI表现。结果IPNB表现为胆管内有多发乳头状肿物，部分会分泌大量黏液阻塞胆管。根据肿块位置不同，可以引起肝内外胆管扩张、病变肝段胆管树权状扩张或胆管囊状扩张。9例MRI上表现为胆管囊状扩张，其中8例胆管内可见乳头状或不规则软组织信号影；7例表现为病变区域胆管树权状扩张伴低信号充盈缺损；3例肝右叶见块状T1WI低信号、T2WI稍高信号影。1例肝左叶胆管扩张，MRI未见明显肿块影。结论MRI检查对IPNB与肝脏其他肿瘤鉴别具有一定价值。
Objective To analyze the MR findings of intraductal papillary neoplasm of bile ducts （IPNB） , and to improve the diagnostic accuracy. Methods MRI findings of 19 cases of IPNB proven by histopathology were reviewed retrospectively. Results Ten cases of intraductal papillary adenoma of the bile ducts and nine cases of intraduetal papillary adenocarcinoma were found at pathology. IPNB were intraductal tumors with numerous frondlike papillary projections. Some of them produced mucin that caused biliary dilatation. Depending on the location of the tumor, dilatation of the entire biliary tree, disproportionate or aneurismal dilatation of the segmental or lobar bile ducts could occur. Nine cases showed aneurysmal dilation with multiple elongated or cordlike mass. Seven cases exhibited segmental bile duct dilation with filling defects. One case only showed dilatation of lobar bile ducts. Conclusion MRI features of IPNB are helpful for distinguishing IPNB from other hepatic lesions.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2009年第8期831-834,共4页
Chinese Journal of Radiology
关键词
胆管肿瘤
磁共振成像
诊断显像
Bile duct neoplasm
Magnetic resonance imaging
Diagnostic imaging
