彩色多普勒超声对小肾癌的诊断及鉴别诊断价值

The value of Color Doppler Flow Imaging in the diagnosis and differential diagnosis of small renal carcinoma

目的:探讨小肾癌(SRC)的彩色多普勒超声表现,评价彩色多普勒超声(CDFI)对SRC的诊断及鉴别诊断价值。方法:采用CDFI检查46例直径≤3cm的肾脏占位性病变的彩色多普勒超声表现进行了分析,对每类病灶的边界、内部回声及彩色血流征象进行统计比较SRC,观察肿物是否引起肾脏轮廓的改变,病变的边界,内部回声强度,观察期边缘及内部的血流分布及强度。检查结果与手术病理结果对照。结果:46例SRC中,22例肿瘤内部回声为偏高至高回声型,等回声型8例,低回声型14例,2例为混合性回声;34例向肾外突出引起肾脏轮廓的改变;CDFI于39例病变内部探测到彩色血流信号,其中16例病变周边及内部见丰富的彩色血流信号,血流分布异常,与周围正常肾实质内的血流分布明显不同,23例病变内部见少量星点状血流信号。结论:CDFI对SRC的诊断符合率高(91.3%,42/46),有重要的临床应用价值。

Objective：To explore the Color Doppler Flow Imaging（CDFI） appearance of small renal carcinoma（SRC） ,and differential diag- nosis of small renal carcinoma. Methods： Fourty-Six cases of SRC were detected with CDFI. The renal contour , borderline and interior a- coustic intensity of the lesions were observed. The peripheral and interior blood distribution and vasculature were detected with CDFI. The results were compared with those of pathology after operation. Results：In 46 cases of tumors 22 were hyperechoic.The echo of tumor was moderate in 8,hypoechoic in 14 and mixed in 2 cases.The renal contour changed in 34 cases with the lesions protruding outside kidney. Blood flow signal was depicted in 39 cases.Abundant color flow signals was detected inside and at peripheral of 161 tumors.The abnormal flow distribution of SRC differed markedly from those in normal renal parenchyma.A less intensive, dotted flow signal appeared in the other 23 cases.Conclusion：CDFI had high diagnostic accuracy in small renal carcinoma 91.3%（42/46）,thereby could be of use in clinical diagnostic regimen.