Large main pulmonary artery

Common: Anemia; Atrial septal defect; Chronic heart disease; Cor pulmonale; Diffuse lung disease; Fluid overload; Heart failure; High output heart disease; Idiopathic; Mitral insufficiency; Mitral stenosis; Normal finding in adult women under 25; Obesity; Patent ductus arteriosus; Pregnancy; Pulmonary arterial disease; Pulmonary arterial hypertension; Pulmonary artery aneurysm; Pulmonary embolism; Pulmonary hypertension; Pulmonic stenosis; Thyrotoxicosis; Ventricular septal defect
Uncommon: Absent pulmonary valve; Aortopulmonary fistula; Aortopulmonary window; Atrioventricular canal defect; Cardiac neoplasm; Coarctation of pulmonary artery; Congenital absence of the pericardium; Cor triatriatum; Coronary artery fistula to right atrium; Coronary artery fistula to right ventricle; Coronary artery-pulmonary artery fistula; Double outlet right ventricle; Eisenmenger syndrome; Endomyocardial fibrosis; Hypoplastic left heart syndrome; Left atrial myxoma; Marfan syndrome; Parachute mitral valve complex; Pulmonary insufficiency; Tricuspid atresia without pulmonary stenosis; Trilogy of Fallot; Truncus arteriosus