Sirenomelia: case of the surviving mermaid.

This report describes a neonate with sirenomelia who was recently treated at British Columbia Children's Hospital. Prenatal diagnosis was made at 29 weeks' gestation. Survival was not anticipated. Cesarean-section at term showed a live 2,375-g infant with excellent Apgar scores. Anomalies noted were fused lower extremities, imperforate anus, colon atresia, bilateral fused pelvic kidneys with renal dysplasia, pelvic and sacral dysplasia, and genital abnormalities. Laparotomy and colostomy were performed. All other anomalies are compatible with life and she is neurologically normal. Eventual separation of the lower extremities is planned. This is the second reported case of survival in a patient born with sirenomelia.