Neonatal Med.  2016 May;23(2):127-130. 10.5385/nm.2016.23.2.127.

Congenital Hydrocolpos Mimicking a Mature Cystic Teratoma in the Pelvis

  • 1Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea.


Neonatal hydrocolpos is a rare condition that involves fluid accumulation in the vagina. On diagnostic imaging, the dilated vagina, along with the compressed uterus, can simulate a mature cystic teratoma with a mural nodule. Herein, we report the case of a newborn girl with congenital hydrocolpos that was caused by an imperforate hymen; the hydrocolpos mimicking a mature cystic teratoma on abdominal ultrasonography and magnetic resonance imaging. Any newborn girl with a pelvic cystic mass should be suspected as having a congenital vaginal obstruction manifesting as hydrocolpos or hydrometrocolpos. Thorough examination of the external genitalia, as well as imaging of the uterus and vagina, enables correct diagnosis and optimal treatment.


Hydrocolpos; Hydrometrocolpos; Imperforate hymen; Infant; Newborn
Full Text Links
  • NM
export Copy
  • Twitter
  • Facebook
Similar articles
Copyright © 2021 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: