肾嫌色细胞癌的CT与MRI诊断价值

CT and MRI Diagnosis Value of Renal Chromophobe Cell Carcinoma

目的:分析肾嫌色细胞癌(CRCC)的CT与MRI表现,提高对该病的诊断准确性。方法:回顾性分析经手术病理证实的16例CRCC临床及影像学资料。结果:16例CRCC均为单发病灶,平均直径5.6cm。CT平扫为稍高密度或密度,病灶较小时密度均匀,病灶较大内有坏死,1例见出血,2例见钙化;增强扫描轻中度强化,净增值小于30HU,强化程度均低于肾实质。MRI T1WI上多呈稍低信号,T2WI上呈等低、稍高信号,部分病灶T2WI可见周围低信号包膜,呈渐进性轻中度强化。结论:CRCC的CT和MRI表现具有一定的特征性,对CRCC的诊断和鉴别诊断有重要价值。

Objective:To analyze the CT and MRI manifestations of renal chromophobe cell carcinoma(CRCC)in order to improve the diagnostic accuracy of CRCC.Methods:The clinical and imaging data of 16 patients with CRCC confirmed by operation and pathology were analyzed retrospectively.Results:All the 16 CRCC cases were single lesions with an average diameter of 5.6 cm.CT plain scan showed slightly high density or density,homogeneous density when the lesion was small,necrosis in the larger lesion,hemorrhage in 1 case,calcification in 2 cases,slight and moderate enhancement with net increment less than 30 HU,and the degree of enhancement was lower than that of renal parenchyma.Most of the lesions showed slightly low signal on T1 WI and iso-low signal on T2 WI.Some lesions showed peripheral low signal envelope on T2 WI,showing gradual mild to moderate enhancement.Conclusion:The CT and MRI manifestations of CRCC have certain characteristics,which have great value in the diagnosis and differential diagnosis of CRCC.