Antenatal detection of sirenomelia – a case report with review of literature

Sirenomelia is a rare congenital anomaly of caudal regression of body characterised by variable fusion of lower limbs associated with genitourinary, gastrointestinal, cardiovascular, neural tube anomalies in most cases. We report a case of sirenomelia diagnosed antenatally in 2nd trimester with associated bilateral renal agenesis and marked oligohydramnios with single umbilical artery. Our aim is to review the literature available in order to make earlier diagnosis and terminate pregnancy safely in advance.