Ventilation–Perfusion Mismatch Caused by Extrinsic Compression of the Pulmonary Artery Correlative Imaging

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An unsuspected right hilar mass causing extrinsic pulmonary artery compression without pulmonary vein or bronchial compromise manifested scintigraphically as a lobar ventilation–perfusion mismatch. Correlative angiographic and CT imaging is presented.

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