Pathologically noted differences in renal size between the two entities, with GCD showing moderate renomegaly and IPCD marked renomegaly, have not been appreciated on US.

• 这两种疾病在病理改变上表现为肾大小存在显著的区别，肾小球疾病显示肾中度肿大，婴儿多囊病肾显著增大，在超声上是无法鉴别的。