Unilateral pulmonary arterial hypervascularity

Increased pulmonary arterial circulation to one lung

Unilaterally increased pulmonary arterial circulation

Common: Air trapping; Arteriovenous malformation; Bullous emphysema; Histoplasmosis; Lymphadenopathy; Neoplasm of lung; Pulmonary artery obstruction; Pulmonary embolus; Swyer-James syndrome
Uncommon: Blalock-Taussig shunt; Complete atrioventricular canal; Hemitruncus; Hypogenetic lung; Patent ductus arteriosus; Potts procedure; Pulmonary artery atresia; Pulmonary artery coarctation; Pulmonary artery stenosis; Scimitar syndrome; Truncus arteriosus with single pulmonary artery; Waterston procedure