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目的:归纳肝外胆管解剖变异和先天发育异常的MRCP(magnetic resonance cholangiopancreatography,MRCP)表现。方法:回顾分析2010年1月到2015年6月间PACS存储的6817例图像资料,首先判定图像质量,然后记录肝门区胆管分支汇入方式、胆囊管插入位置、胆管先天发育异常及其表现。结果:1590例存在肝外胆管解剖变异和先天发育异常。其中胆囊管汇入位置异常发生率14.72%(787/5347),肝门区胆管分支汇入状态异常发生率17.97%(961/5347)。包括肝门区胆管分支汇入状态正常,胆囊管汇入位置异常575例,发生率10.75%(575/5347)。胆囊管汇入位置正常,肝门区胆管分支汇入状态异常749例,发生率14.01%(749/5347)。胆囊管汇入位置和肝门区胆管分支汇入状态异常并存212例,发生率3.96%(212/5347)。先天性发育异常即先天胆管扩张症54例,发生率1.01%(54/5347)。结论:肝外胆管解剖变异和先天发育异常复杂多样,MRCP能够准确显示大部分解剖变异种类及其毗邻关系,但是受图像质量及所罹患病种制约。
Objective: To summarize MRCP (magnetic resonance cholangiopancreatography, MRCP) manifestations of extrahepatic bile duct anatomy and congenital dysplasia. Methods: A retrospective analysis of 6817 cases of PACS-stored image data from January 2010 to June 2015 was performed. First of all, the image quality was determined. Then, the approach of bile duct branching, insertion of cystic duct, congenital abnormality of bile ducts and their manifestations . Results: There were 1590 cases of extrahepatic bile duct anatomical variation and congenital dysplasia. Including the location of cystic duct anomalies occurred in 14.72% (787/5347), hilar region bile duct anomalies were 17.97% (961/5347). Including hilar bile duct branch into the normal state, the location of the cystic duct into the abnormal 575 cases, the incidence rate of 10.75% (575/5347). The location of the cystic duct was normal, and 749 cases of anomalous biliary branches were introduced into the portal area. The incidence rate was 14.01% (749/5347). Cystic duct location and hilar bile duct branch merged abnormal state coexistence of 212 cases, the incidence of 3.96% (212/5347). Congenital dysplasia that congenital bile duct dilatation in 54 cases, the incidence of 1.01% (54/5347). Conclusion: Extrahepatic bile duct anatomy and congenital anomalies are complex and diverse. MRCP can accurately display most of the anatomical variations and their adjacent relations, but are restricted by the image quality and the type of diseases they suffer from.