Combined aortic and inferior vena caval coarctation --an unknown association.

Atypical coarctation of the aorta refers to narrowing (discrete or diffuse) that involves the thoracic or abdominal segments. Such a phenomenon has never been reported in the inferior vena cava. This is a report of combined coarctation of the abdominal aorta and inferior caval vein in a still birth with sirenomelia, ambiguous genitalia, and other extracardiac anomalies. The maternal serum was positive for Toxoplasma and CMV. Evidence of phlebitis was present in the inferior caval vein.