Anomalous Pulmonary Venous Return

Abstract
One hundred and thirteen selected anomalous pulmonary venous returns have been well documented anatomically. Twenty-seven variations were seen. With the use of simplified diagrams, these have been correlated with related cases in the literature. Emphasis has been placed on transitional forms with one anomaly shading off into the next, rather than upon a series of neat, compartmentalized, classic types of anomalous pulmonary venous return. It is hoped that the broad anatomic spectrum shown will promote additional understanding and interest.