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目的探讨肾嫌色细胞癌(chromophobe renal cell carcinoma,CRCC)的CT与超声表现特点,提高对本病的认识。方法回顾性分析36例经手术病理证实的CRCC,36例均行CT平扫或增强扫描,26例同时行超声检查。分析CRCC的CT平扫及动态扫描特点,并观察瘤体回声、包膜以及彩色血流超声表现。结果肿瘤实性成分平扫呈略高密度。动态增强扫描,9例、23例、4例分别于皮质期、实质期、延迟期强化程度最高。36例均表现为轻度强化。14例均匀强化,16例为不均匀强化,6例为周边强化。超声以低回声(18/26,69.2%)及中等实质回声(4/26,15.4%)为主,病灶内回声以不均匀多见(16/26,61.5%),包膜不明显,部分可见假包膜,大多侵犯局部肾包膜。瘤体中心及边缘以无明显血流(6/26,23.0%)或少量血流彩色为主(10/26,38.5%),部分富血供(8/26,30.8%),少数(2/26,7.7%)为中等血流分布。结论 CRCC的影像表现具有一定特征,综合分析其影像学表现,有助于提高该肿瘤的诊断准确率。
Objective To investigate the CT and ultrasonographic features of chromophobe renal cell carcinoma (CRCC) and to improve their understanding of the disease. Methods Retrospective analysis of 36 cases of pathologically confirmed CRCC, 36 cases underwent CT scan or enhanced scan, 26 cases underwent simultaneous ultrasound. The characteristics of CT plain scan and dynamic scanning of CRCC were analyzed, and the echogenicity of the tumor, capsule and color flow ultrasound were observed. Results of the solid component of the tumor was slightly higher density. Dynamic enhanced scan, 9 cases, 23 cases, 4 cases were in the cortical phase, pragmatic phase, the highest degree of delay enhancement. 36 cases showed mild enhancement. 14 cases of uniform enhancement, 16 cases of uneven enhancement, 6 cases of peripheral enhancement. Echocardiography was mainly found in low echo (18/26, 69.2%) and moderate echoes (4/26, 15.4%). The echoes of lesions were more uneven (16/26, 61.5% Can be seen fake capsule, most of the violations of the local renal capsule. The tumor center and margins with no significant blood flow (6 / 26,23.0%) or a small amount of blood flow color (10 / 26,38.5%), partial blood supply (8 / 26,30.8%), a few /26,7.7%) for moderate blood flow distribution. Conclusion The imaging features of CRCC have certain characteristics. The comprehensive analysis of the imaging findings can help to improve the diagnostic accuracy of the tumor.