a radiographic appearance associated with total anomalous drainage of the pulmonary venous circulation into enlarged right and anomalous left superior venae cavae, which produces a globular density above the heart; the silhouette suggests the figure 8; TAPVR.
Synonym(s): snowman abnormality
See Also: anomalous pulmonary venous connections, total or partial, under connection
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.