Korean J Obstet Gynecol.
2001 Jan;44(1):198-201.
A Case of Sirenomelia Diagnosed at 12 Gestational Weeks
- Affiliations
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- 1Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea.
Abstract
- Sirenomelia, characterised by a complete or incomplete fusion of the lower extremities, is a severe form of caudal defect affecting 1.5-4.2 in 100,000 births. Most cases of sirenomelia die within 5days after birth and are associated with abnormalities such as renal agenesis, urinary tract agenesis, single umbilical artery, etc. Third trimester ultrasonographic diagnosis is usually impaired by severe oligohydramnios whereas the amount of amniotic fluid may be sufficient to allow diagnosis in the early second trimester. We report a case of sirenomelius at 12 weeks of gestation using prenatal transvaginal ultrasonography.
