小肾癌的磁共振成像诊断与鉴别诊断

MRI diagnosis of small renal cell carcinoma

目的探讨磁共振成像(MRI)在诊断小肾癌中的临床意义。方法 15例经手术病理证实的小肾癌患者,对其MRI表现进行分析。结果肾脏形态改变,病灶边缘出现假包膜征以及局部病变部位皮髓质分界消失,是小肾癌的主要表现。结论小肾癌MRI的病灶信号表现复杂多变,假包膜的出现对其有诊断与鉴别诊断有意义。动态增强扫描信号改变取决于肿瘤血供。

Objective To disuss the significance of MRI for small renal cell carcinoma （Rccs） diagnosis. Methods Fifteen patients were diagnosed as smau renal cell carainoma pathologicallg with proved small renal cell carcinoma pathologically,the MRI apperances were analysed. Results MRI findings of small rccs included renal de- formation, cortex-medulla demarcation disappearance, and the presense of pseudocapsule. Conclusion The focal signals of small rccs are diverse and complicated,the presence of pseudoeapsule is helpful in the diagnosis of rccs. The findings of dynamic enhanced scanning are related to the blood supply.