摘要
目的探讨MR在肾肿瘤临床诊断中的价值。方法回顾分析24例经病理证实的肾肿瘤患者临床资料,病理类型包括透明细胞性肾癌20例、乳头状肾细胞癌2例及血管平滑肌瘤2例。所有患者均行T1WI、T2WI、STIR序列检查,同时做MR动态增强扫描。结果透明细胞癌20例,T1WI均匀等信号7例,混杂信号10例,均匀低信号3例;T2WI均匀略高信号9例,明显高信号1例,混杂信号10例;显示假包膜者10例;肾窦侵犯3例,肾周侵犯4例,下腔静脉癌栓1例,腹膜后或肾门淋巴结肿大3例,腰大肌转移1例。注入造影剂后,7例病灶均匀强化,13例不均匀强化。乳头状肾细胞癌2例,T2WI低信号,增强后表现为持续轻度强化。血管平滑肌瘤2例,T1WI上的明显的高信号,T2WI为中等信号,无假包膜,脂肪可被明显抑制,无明显强化。结论 MR对于肾肿瘤的术前检出、诊断有较高的准确率,具有重要的临床应用价值。
Objective To evaluate the significance of magnetic resonance （MR） in the diagnosis of renal tumor. Methods Twenty-four cases of renal tumor confirmed by pathological examination, including 20 clear renal cell carcinoma, 2 papillary renal cell carcinoma （PRCC） and 2 renal angiomyolipoma （RAL）, were examined with MR （including TlWI, T2WI and STIR） and MR contrast-enhanced scan before operation. Results In the 20 cases of clear cell carcinoma, 7 had isointensity, 10 had inhomogeneous signal intensity and 3 had low signal intensity on TlWI; while 9 had slight high signal intensity, 10 had inhomogeneous high signal intensity 1 had clearly high signal intensity on T2WI. Pseudocapsule was found in 10 cases, renal sinus invasion in 3 and perirenal invasion 4, renal vein embolism in 1, metastasis of lymph nodes of retroperitoneum or renal hila in 3, and metastasis of psoas major muscles in 1 case. After injection of contrastmedia, homogeneous enhancement was presented in 7 cases, and inhomogeneous enhancement in 13 cases. 2 cases of PRCC displayed relatively homogeneous hypointensity on T2WI with mild enhancement. 2 cases of RAL displayed clearly high signal intensity on TlW and isointensity on T2WI. Conclusions MR has a major role in detecting, diagnosing and staging of renal tumor.
出处
《现代泌尿外科杂志》
CAS
2011年第4期339-342,共4页
Journal of Modern Urology
关键词
肾肿瘤
肾细胞癌
磁共振成像
乳头状肾细胞癌
renal tumor
renal cell carcinoma
magnetic resonance imaging
papillary renal cell carcinoma
