Davies P, Price H M, Knapp D R
Clin Radiol. 1981 Jul;32(4):413-9. doi: 10.1016/s0009-9260(81)80285-1.
There are two types of extravasation into the renal sinus from the fornices of the calyces; one due to transudation through an intact mucosa and the other due to an actual defect in the calyx. It is suggested that extravasation from the fornices into the renal sinus can occur spontaneously in the absence of obstruction and without a rise in pressure. Truly spontaneous extravasation can occur whether ureteric compression is used or not.
从肾小盏穹窿部渗入肾窦有两种类型；一种是通过完整黏膜的漏出，另一种是由于肾盏实际存在缺损。有人提出，在无梗阻且压力未升高的情况下，肾小盏穹窿部向肾窦的渗漏可自发发生。无论是否采用输尿管压迫，真正的自发渗漏都可能发生。
