目的总结胆管错构瘤的CT及MRI 表现，对比分析并发感染病例病灶的治疗 前后改变，以提高对该病影像检查及诊断 的认识。方法 回顾性研究我院诊治的10 例胆管错构瘤患者的资料，分析胆管错构 瘤病变的CT、MRI表现特点，对并发感染 病例的治疗前后变化进行对比分析。结果 胆管错构瘤的CT平扫表现为散在或弥漫性 分布的低密度灶，增强扫描无强化；MRI 平扫T2WI序列能敏感的显示呈明显高信号 的囊性病变；MRCP立体的显示弥漫性病 变，所有病变与肝内胆管树不相通；并发 感染后病灶边界变模糊。结论 单纯CT检 查对胆管错构瘤的诊断有一定局限性，常 规MRI平扫及MRCP检查较CT检查有明显优 势，对诊断的确立具有重要价值，同时应 特别注意并发感染后病灶的变化。

Objective To summarize computed tomography (CT) and magnetic resonance (MR) imaging features of multiple bile duct hamartomas (BDH) and analysis changes of lesions with concurrent infection before and after treatment on MRI and CT to improve understanding of the imaging findings of the disease. Methods This retrospective study reviewed CT and MR imaging findings of ten patients with multiple bile duct hamartomas in our hospital and compared the difference of imaging findings before and after therapy in those with infection. Results Non-contrasted enhanced CT images of multiple bile duct hamartomas showed scattered or diffuse low density lesions with no enhancement; T2 weighted imaging (T2WI) was sensitivity to detect cystic lesion with significantly higher signal. Diffuse liver disease could be well displayed by Magnetic Resonance Cholangiopancreatography (MRCP), and all lesions were without intrahepatic biliary communication and have irregular borders when concurrent infection. Conclusion CT examination is limited in the diagnosis of biliary hamartomas, and conventional noncontrasted MRI and MRCP examinations have great value and show some advantages in the diagnosis of multiple bile duct hamartomas compared to CT, while we should pay more attention to the change of imaging findings of those with concurrent infection.