[3] The anomalous venous return forms a curved shadow on chest x-ray such that it resembles a scimitar.

[4] The diagnosis is made by transthoracic or transesophageal echocardiography[citation needed] and selective pulmonary angiography.

[citation needed] Pulmonary angiography demonstrates anomalous arterial supply to right lower lobe.

[5] Surgical correction should be considered in the presence of significant left to right shunting (Qp:Qs ≥ 2:1) and pulmonary hypertension.

This involves creation of an inter-atrial baffle to redirect the pulmonary venous return into the left atrium.