Cardiac Radiography > Pathology > Pulmonary Vascular Patterns > Diminished Pulmonary Vascularity

Pulmonary Vascular Patterns: Diminished Pulmonary Vascularity

Diminished pulmonary vascularity is rare in the adult. the most frequently encountered lesion being Ebstein's anomaly of the tricuspid valve. Both the central and peripheral vessels are decreased in size (see figures below).

Diminished vascularity in a patient with Ebstein's anomaly. Both the central and peripheral vessels are small. There is also massive right heart enlargement owing to severe tricuspid valve regurgitation. 


Severe Tetralogy of Fallot in a 19 year old. The pulmonary vascularity is markedly diminished and the heart is not enlarged.


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