摘要
<正>Key facts Definition:.Failure of primitive urogenital sinus to develop which gives rise to lower third of vigina.Not considered an anomaly of Müllerian duct origin.Classicimaging appearance:.low vaginal obstruction with fibrotic tissue replacing normal zonal anatomy and with secondary hematometrocolpos.Differential diagnosis:vaginal agenesis and imperforate hymen Clinical issues:.usual presentation at menarche with primary amenorrhea and
- 单位