Table 1.

Known causes of main dilated pulmonary artery

Causes
Pulmonary hypertension
Pulmonary arterial hypertension
Thromboembolic disease (acute or chronic)
Eisenmenger syndrome
High altitude
Schistosomiasis
Increased or turbulent blood flow
Left-to-right shunting
Patent ductus arteriosus
Atrial septal defect
Ventricular septal defect
Valvular pulmonic stenosis
Arteriovenous malformation
Congenital
Infectious
Hereditary hemorrhagic telangiectasia
Rheumatologic/vasculitis
Behçet disease
Hughes-Stovin syndrome
Takayasu arteritis
Connective tissue disease
Marfan syndrome
Loeys-Dietz syndrome
Ehlers-Danlos syndrome
Cystic medial necrosis
Infectious
Tuberculosis
Syphilis
Bacterial
Trauma
Blunt
Penetrating
Idiopathic