Cardiac Radiography > Pathology > Pulmonary Vascular Patterns > Pulmonary Overcirculation

Pulmonary Vascular Patterns: Pulmonary Overcirculation

Pulmonary overcirculation, also referred to as shunt vascularity, results from an absolute increase in blood flow to the lungs and in adults is most often associated with left to right shunts. Radiographically it is characterized by proportional enlargement of all of the central and peripheral pulmonary vessels (see figure below).

Pulmonary overcirculation in a patient with an atrial septal defect. The vessels are enlarged centrally and peripherally.


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