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目的探讨磁共振显像(MRI)在肝脏炎性假瘤临床诊断中的价值。方法回顾性分析经病理证实的11例肝脏炎性假瘤(IPL)的MRI表现,并结合病理结果进行对比分析。结果11例中术前磁共振检查正确诊断4例,误诊为原发性肝癌1例、肝脏转移瘤1例、不典型血管瘤4例、肝脓肿1例。MR平扫11例中T1WI呈中等信号、T2WI呈稍高信号者6例;T1WI呈稍低信号、T2WI呈高信号2例;T1WI、T2WI均呈等信号2例;T1WI低信号、T2WI高信号、病灶周边伴环样长T2信号者1例。多期动态增强扫描,所有病灶动脉期均无强化。静脉期及延迟期呈周边环形强化7例,内见线样分隔强化者3例;附壁小结节样强化1例。结论IPL的MRI表现多样,与其病理结构及病程相关,MRI对IPL的诊断具有重要价值。
Objective To investigate the value of magnetic resonance imaging (MRI) in the diagnosis of hepatic inflammatory pseudotumor. Methods The MRI manifestations of 11 cases of hepatic inflammatory pseudotumor (IPL) confirmed by pathology were analyzed retrospectively, and compared with the pathological results. Results Of the 11 cases, 4 cases were correctly diagnosed by preoperative magnetic resonance imaging, 1 case was misdiagnosed as primary liver cancer, 1 case was liver metastases, 4 cases were atypical hemangiomas and 1 case was liver abscess. In MR plain scan, T1WI showed moderate signal and T2WI showed slightly higher signal in 6 cases. T1WI showed slightly lower signal and T2WI showed high signal in 2 cases. T1WI and T2WI showed equal signal in 2 cases. T1WI low signal and T2WI high signal , Peripheral lesions with ring-like T2 signal in 1 case. Multi-phase dynamic contrast-enhanced scan, no enhancement of all lesions in the arterial phase. The venous phase and the lag phase were peripheral annular enhancement in 7 cases, internal see-line-like enhancement in 3 cases, and mural nodular enhancement in 1 case. Conclusions IPL has various MRI manifestations, which are related to its pathological structure and course of disease. MRI is of great value in the diagnosis of IPL.