肾嫌色细胞癌的影像学诊断

目的：探讨肾嫌色细胞癌（CRCC）的影像学表现特征,提高术前诊断水平。方法：回顾性分析15例CRCC病例,其中14例经B超检查;8例行CT检查,包括平扫、皮质期和实质期动态增强扫描;3例行MR检查,包括平扫T1WI、T2WI及皮质期和实质期动态增强T1WI等。9例中有2例患者同时行CT和MR检查,有6例只有IVU和/或超声影像学资料。结果：病灶位于左肾11例,右肾4例,最大径2～14cm,平均5.8cm。8例CT检查中,7例病灶平扫呈等密度或以等密度为主,1例呈稍低密度为主的混杂密度团块。增强皮质期,8个病灶的强化程度均高于髓质,但低于皮质;实质期,8个病灶密度均明显低于肾实质。MR检查的3例相对于髓质,病灶在平扫T1WI上呈等信号,在T2WI上表现为低信号。病灶的强化方式与CT相似。结论：CRCC在CT、MRI上肿瘤实质大多表现为均质性,强化具有一定的特征,病灶呈类圆形或分叶状,其边缘较光整、分界清、病灶中央可出现星型瘢痕或纤维间隔等,对诊断具有较大的帮助。

Imaging Diagnosis of Chromophobe Renal Cell Carcinoma

Objective:To discuss and analyze the radiological features of chromophobe renal cell carcinomas (CRCC) in order to improve the level of preoperative diagnosis.Methods:The data of ultrasound,CT and MRI of 15 patients with CRCC were reviewed retrospectively.Fourteen patients underwent ultrasound,and 8 patients underwent CT,including precontrast scan,the contrast corticomedullary phase scan and the parenchymal phase scan.Three patients underwent MRI examinations,including precontrast T1WI,T2WI and enhanced T1W...