Lange H, Knopp W, Jecht I
Kinderarztl Prax. 1979 Apr;47(4):178-82.
The crescent sign is a rare roentgenological symptom in excretory urography of infantile hydronephrosis. The orign is a presence of contrast material in the collecting renal tubule of the atrophic renal parenchyma. That is displaced at the renal circumference. The disappearance of the crescent sign represents the prognostic for the reparative potence of the renal parenchyma after the therapy of the obstructive uropathy in two own case.
新月征是婴儿肾积水排泄性尿路造影中一种罕见的放射学征象。其起源是萎缩性肾实质的集合肾小管内存在造影剂，该造影剂在肾周被移位。在两例自身病例中，新月征的消失代表了梗阻性尿路病治疗后肾实质修复能力的预后情况。
