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[Scimitar syndrome with diagnostic MRI findings].

A fifty-year-old woman was admitted to our hospital because of an abnormal shadow on a chest X-ray film. She was asymptomatic. Chest X-ray film showed a scimitar-like vessel in the right lung, dextroposition of the heart, and hypoplasia of the right pulmonary artery. MRI revealed that the scimitar vein was anomalous pulmonary venous return from the right lung. Normal venous return from the right lower lobe to the left atrium was confirmed by pulmonary artery angiography. MRI findings have been useful in the diagnosis of scimitar syndrome.