Neonates with congenital heart disease, Part IV: Total anomalous pulmonary venous return.

Significant radiographic findings of TAPVR with unobstructed blood flow include the following: 1. Increased pulmonary vascular markings with dilated pulmonary arteries 2. Cardiomegaly 3. A "snowman" configuration of the heart, seen after pulmonary vascular resistance falls and blood flow through the lungs increases In TAPVR with obstructed blood flow, findings include the following: 1. A hazy, reticular, ground-glass appearance of the lung fields 2. Normal to small cardiac size.