Objective: To evaluate the experession of Collagen type IV in hydronephrotic kidneys and its clinical implications.

研IV原在肾积水中的表达及意义，并探讨其沈积与小管质纤维化程度的相关性。

The dilated ectopic ureters draining the bilateral hydronephrotic upper renal segments issued into vaginal vestibule and caused urinary incontinence.

其中百分之二十四可发现有输尿管重复现象。