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

研究IV型胶原在中的表达及意义，并探讨其沈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.

其中百分之二发现有两侧输尿管重复现象。