Sirenomelia with Potter syndrome: a case report and review of literature

ABSTRACT

Sirenomelia or mermaid syndrome is a rare congenital anomaly characterized by variable degree of fusion of lower extremities. Awareness to this rare condition is important for prenatal diagnosis and prognosticating the fetus. The exact etiopathogenesis is still an area of research. Two pathogenic hypotheses are the vascular steal hypothesis and the defective blastogenesis hypothesis with exceptions reported in literature.