The embryology and histology principle of double genitalia of one side emphraxis and lacking the kidney ofthat side were studied. The video characteristics of 3D color Doppler were summarized consequently.

• 目的探讨双套生殖道一侧阻塞并同侧肾缺如的胚胎学、组织学原理,总结其三维彩色多普勒的声像特点。