The occurrence and classification of congenital vaginal atresia

Objective：To investigate the occurrence and classification of congenital vaginal atresia.Methods：A retrospective analysis(from Mar.1984 to Mar.2010) about congenital vaginal atresia was carried.All 95 cases were classified according to anatomic characteristics.A new hypothesis was developed based on the traditional theory of embryonic development and a serial of experimental data.Further study about the occurrence and classification was raised.Results：A new classification was developed and listed.Type Ⅰ：atresia in lower part,type Ⅱ：full atresia,type Ⅲ：atresia in upper part,and type Ⅳ：atresia on the top.Conclusions：The new classification will be benefit for the diagnosis and treatment in future clinical practice.