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目的探讨MRI在原发性肝内周围型胆管细胞癌(IHPCC)中的诊断与鉴别诊断价值。方法收集经手术/穿刺活检病理证实的IHPCC 12例,所有病例均做了MRI平扫和动脉期、门脉期、延迟期增强扫描,分析记录IHPCC MRI平扫及多期动态增强扫描表现。结果共计17枚IHPCC瘤灶,其中12枚瘤灶T2WI信号特点为周围稍高、中央等低、边缘模糊,其余5枚瘤灶呈长T2信号。动脉期2枚瘤灶不强化,其余15枚瘤灶均为周围轻度环状强化,门脉期和延迟期17枚IHPCC瘤灶均呈向心性充填;12例IHPCC均正确诊断。结论IHPCC的MRI影像表现较具有特征性,对该瘤的诊断具有重要价值。
Objective To investigate the value of MRI in the diagnosis and differential diagnosis of primary intrahepatic cholangiocarcinoma (IHPCC). Methods Twelve cases of IHPCC confirmed by pathology of operation / biopsy were collected. All patients underwent MRI scan and enhanced phase of arterial phase, portal phase and delayed phase. The plain and multi-phase dynamic contrast-enhanced MRI findings of IHPCC were recorded and analyzed. Results A total of 17 IHPCC tumors were found. Among them, T2WI signal features of 12 tumors were slightly higher in the periphery, lower in the center and fuzzy in the edge. The remaining 5 tumors showed long T2 signal. Two aneurysmal lesions were not enhanced in the arterial phase, and the other 15 lesions were mildly annular enhancement around the portal vein. Seventeen IHPCC lesions in the portal vein and in the delayed phase showed centripetal filling. All 12 IHPCCs were correctly diagnosed. Conclusion IHPCC MRI imaging performance is more characteristic, the diagnosis of the tumor has an important value.