Tehran University of Medical Sciences
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Davood Beiki

Unilateral absent lung ventilation and perfusion due to hilar mass

Authors: Gholamrezanezhad A, Eftekhari M, Fard A, Fallahi B, Beiki D,
Hell J Nucl Med , Vol.8, No.3, 2005,Page:169-170

A 54 year old man was referred to us from his private physician for ventilation-perfusion lung scan. In both scans radiotracer activity was absent in the region of the right lung, while a prior chest X-rays film revealed no remarkable abnormality. Subsequent chest computed tomography revealed a hilar mass compressing the hilar vascular and bronchial area components. This case emphasizes that a hilar mass could induce both bronchial and vascular compression with end result matched ventilation-perfusion defect in the entire lung. The chest X-rays film was normal and the chest computed tomography showed a large hilar mediastinal mass. The differential diagnosis of this case is presented.