螺旋CT多期增强扫描对小肾癌的诊断价值  

Diagnostic Value of Multiphasic Enhancement of Spiral Computed Tomography Scanning in Patients with Small Renal Cell Carcinoma

作　　者：姜萍[1] 冯浩[2] 刘文军[1] 罗敏[1] 

机构地区：[1]自贡市第四人民医院放射科 [2]自贡市第一人民医院放射科,四川自贡643000

出　　处：《川北医学院学报》2010年第1期60-63,共4页Journal of North Sichuan Medical College

摘　　要：目的:探讨螺旋CT多期增强扫描对小肾癌的诊断价值。方法:回顾分析28例小肾癌的螺旋CT资料。比较肿瘤大小,强化程度与模式(均匀、不均匀及主要周边强化),肿瘤侵犯程度(肾周受侵情况、肿瘤扩散及淋巴结转移)等情况。结果:28例小肾癌患者中,左肾12例,右肾16例,肿瘤直径2.4±0.5cm。CT平扫病灶呈低密度16例,稍高密度4例,等密度8例。增强扫描皮质期明显强化24例,轻度强化4例,实质期、排泄期呈低密度影,强化方式呈"快进快出"表现。结论:螺旋CT多期增强扫描可准确显示小肾癌病变范围及与周围组织关系,可为小肾癌的诊断以及临床治疗提供重要价值。Objective： To investigate the diagnostic value of multiphasic enhancement of spiral computed tomography on small renal cell carcinoma（RCC）.Methods： The authors reviewed the spiral CT scans of 28 patients with pathologic confirmation of small renal cell carcinoma.We compared tumor size,degrees and patterns（homogeneous,heterogeneous,predominantly peripheral） of enhancement,and tumor-spreading patterns including perinephric changes,venous invasion,and lymphadenopathy in four subtypes.Results： There were 12 tumor masses in the left kidney and 16 in the right one.The greatest dimension of tumor was 2.4±0.5cm.Plain CT scan showed low density mass in 16 cases,slightly hyper-dense mass in 4 cases,iso-dense mass in 8 case.Contrast CT scan showed marked enhancement in cortical phase in 24 cases,slight enhancement in 4 cases,the masses were enhanced in a corticomedullary phase.The enhancement of all tumor cases faded away in the following parenchymal phase and excretory phase scans.The tumor enhancement showed characteristically the phenomenon of ＂quick staining and quick fainting＂.Conclusion： The multiphasic enhancement of spiral CT scan is a valuable method in diagnosis of small renal cell carcinoma.The relations of kidney vessels,tumors and neighboring tissues can be showed clearly.It can provide more information for clinical treatment.

关 键 词：肾癌 体层摄影技术 X线计算机扫描 螺旋CT 

分 类 号：R814.42[医药卫生—影像医学与核医学]