肝外胆管乳头状瘤的MRI诊断

目的探讨MRI对肝外胆管乳头状瘤的诊断价值。方法回顾性分析经病理证实的16例胆管乳头状瘤的MRI表现和术前诊断,并与病理对照。结果12例胆管乳头状瘤呈树枝状或长条状管腔内生长,4例呈小条状或结节状位于胆总管内;T1WI信号略低于或等于脾脏的低信号,T2WI稍高于肝脏的信号。结论胆管乳头状瘤具有多发性、广泛性、恶变率和复发率高的特点;MRCP能满意显示胆道情况;MRI信号具有提示倾向,诊断准确率高。

Diagnosis of extrahepatic biliary papilloma by MRI

Objective To analyze MRI features of extrahepatic biliary papilloma (EHBP) and determine the value of MRCP for diagnosis of the disease. Methods The MRI features and preoperative diagnosis of 16 cases of pathologically proved EHBP were retrospectively analyzed. Results The tumor grew in the branch manner in the biliary tract in 12 cases and was node-like in common hepatic duct in other 4. The intensity of T1WI signal was slightly lower than or equal to that of the spleen. The intensity of T2WI signal was slightly higher than that of the liver. Conclusions EHBP is characterized by multiple and diffusive lesions and has high rate of recurrence and malignant transformation. MRCP can effectively show the condition of the biliary tract. MRI signals is helpful for promoting the rate of correct diagnosis.