MDCT动态增强扫描对肾透明细胞癌的诊断价值

The value of dynamic contrasting scan of MDCT on diagnosis of clear renal carcinoma

目的:探讨多层螺旋CT(MDCT)动态增强扫描CT对肾透明细胞癌(CCRCC)的诊断价值。方法:回顾性分析103例手术病理证实的CCRC的多期MDCT表现。结果:103例CCRC共有病灶111个,MDCT平扫100个(100/111,90.1%)瘤灶表现为不均匀的等、稍低或高密度,增强扫描皮髓期102个(102/111,91.9%)肿瘤明显不均匀强化,强化最明显处与临近肾皮质相似或高于正常肾皮质,肾实质期病变强化程度降低。结论:CCRCC为富血供肿瘤,动态增强CT皮髓期肿瘤强化与肾皮质相仿或高于肾皮质,具有一定特征性,可与其他亚型肾细胞癌鉴别。

Objective：To explore the value of dynamic contrasting scan of MDCT on diagnosis of clear cell renal carcinoma（CCRCC）.Methods：Retrospectively analysis 103 cases of CCRCC and interpret all tumors every phase of MDCT.Results：There are 111 CCRCC in 103 cases.100 tumors express inhomogeneous iso-,slightly hypo-or hyperattenuation on plain CT.On contrasted CT,102 tumors express obviously heterointense contrastment in renal corticomedular phase,and the degree of contrastment is similar or stronger than normal renal cortex.In renal parenchyma phase the tumor＇s attenution is hypointense compared with normal renal parenchyma.Conclusion：CCRCC is abundant vascular tumor,and in renal corticomedular phase most tumors express hyper-or isointense contrastment compared with renal cortex.This is relatively specific and could be differentiated from orther renal cell carcinomas.