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Neonatal Med > Volume 23(2); 2016 > Article
Neonatal Medicine 2016;23(2):127-130.
DOI:    Published online May 31, 2016.
Congenital Hydrocolpos Mimicking a Mature Cystic Teratoma in the Pelvis.
Mea Young Chang
Department 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.
Key Words: Hydrocolpos, Hydrometrocolpos, Imperforate hymen, Infant, Newborn
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