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Medical Definition of Snowman abnormality
1. A radiographic appearance associated with total anomalous drainage of the pulmonary venous circulation into enlarged right and anomalous left venae cavae, that produces a globular density above the heart; the silhouette suggests the figure 8. Synonym: snowman abnormality. (05 Mar 2000)
Lexicographical Neighbors of Snowman Abnormality
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