Cunningham J J, Bacani-Faulls M
Department of Radiology, Ohio State University Medical Center, Columbus.
Urology. 1990 Apr;35(4):367-70. doi: 10.1016/0090-4295(90)80169-n.
It is important to detect minimal hydronephrosis in a renal transplant because early or low-grade obstruction is clinically significant. Similarly, it is equally important to detect minimal mucosal thickening of the collecting system because this finding indicates the presence of renal disease even though thickening itself is nonspecific as to etiology. Differentiating between minimal hydronephrosis and minimal mucosal thickening may be difficult. We have noticed that meticulous sonograms made with an ultrasound transducer placed perpendicular to the interface of two opposing surfaces of thickened mucosa will produce a bright linear echo which can help discover and distinguish between these two entities. We choose to call this echo complex the "white line sign."
在肾移植中检测出轻微肾积水很重要，因为早期或轻度梗阻具有临床意义。同样，检测出集合系统轻微黏膜增厚也同等重要，因为这一发现表明存在肾脏疾病，尽管增厚本身在病因方面是非特异性的。区分轻微肾积水和轻微黏膜增厚可能会很困难。我们注意到，使用超声换能器垂直于增厚黏膜的两个相对表面的界面进行细致的超声检查，会产生一条明亮的线性回声，这有助于发现和区分这两种情况。我们选择将这种回声复合体称为“白线征”。
