摘要
目的：分析肾集合管癌的CT和MRI表现,提高对肾集合管癌诊断的准确性。方法：回顾性分析7例经病理证实的肾集合管癌的临床表现、影像学及病理学特征。其中5例行CT平扫及增强扫描,2例行MRI平扫及增强扫描。结果：7例中男4例,女3例。年龄44~76岁,中位年龄58岁。肿瘤位于左肾5例,右肾2例。肿瘤直径3.6~6.7cm,平均5.2cm。7例均是实性肿块,形态不规则、边界不清。5例肾脏轮廓改变。CT平扫为等密度,T1WI为等或稍高信号,T2WI为低信号,密度或信号多不均匀,内可见片状坏死区,增强后呈轻度不均匀延迟强化。5例有腹膜后淋巴结肿大,其中1例有同侧肾上腺转移,1例有颈部淋巴结转移。3例有肾静脉癌栓形成。结论：肾集合管癌的CT和MRI表现有一定的特征性,在肾内出现以髓质为中心、边界不清、增强后轻度延迟强化肿块,早期即有淋巴结转移时应考虑此病的可能。
Objective：To analyze the computed tomography（CT）and magnetic resonance imaging（MRI）features of collecting tubules carcinoma of kidney（CDC）,in order to improve the diagnostic accuracy of this disease.Methods：Clinical manifestations,imaging and pathological features of 7cases with pathology proved collecting tubules carcinoma of kidney were reviewed retrospectively.Five cases underwent CT plain scan and contrast enhanced acquisitions.Plain and contrast enhanced MRI scanning were performed in 2cases.Results：Seven patients,four males and three females ranged from 44 to 76years old（median age,58yrs）.The tumors were located in the left kidney（5cases）or right kidney（2cases）.The diameter of tumors ranged from 3.6cm to 6.7cm（mean diameter,5.2cm）.All the 7cases were solid masses with irregular shape and ill-defined boundary.The renal contour of 5cases were changed.Tumors were iso-dense on CT plain scan images,iso-or hyperintense on T1-weighted imaging and hypointense on T2-weighted imaging.The density or signal intensity was inhomogeneous,combined with necrosis.After injection of contrast,enhancement of tumors was slight and heterogeneous.Five cases had retroperitoneal lymph node metastases,one of them had ipsilateral adrenal metastasis and one had cervical lymph node metastases.Three cases were found with thrombosis in the renal vein.Conclusion：The collecting tubules carcinoma of kidney has certain CT and MRI characteristics.A renal tumor should be considered as CDC when it located centrally in the medulla,with ill-defined boundary,slight enhancement,and lymph node metastases in the early stage.
出处
《放射学实践》
北大核心
2016年第10期943-946,共4页
Radiologic Practice
关键词
肾小管
集合
肾肿瘤
体层摄影术
X线计算机
磁共振成像
病理学
Kidney tubules
collecting
Kidney neoplasms
Tomography
X-ray computed
Magnetic resonance imaging
Pathology
