Unilateral absence of ventilation and perfusion due to thoracic aortic aneurysm |
| |
Authors: | R A Duke M R Barrett S D Payne J D Massie J E Salazar M L Gavant |
| |
Institution: | Department of Radiology, University of Tennessee, Memphis. |
| |
Abstract: | An elderly man presented with progressive atelectasis of the left lung, a mediastinal mass, and dilatation of the thoracic aorta. Ventilation and perfusion radionuclide lung scans revealed the complete absence of ventilation in the left lung and near-complete absence of perfusion. Evaluation by MRI and angiography showed an obstructing mediastinal "mass" to be a saccular aortic aneurysm. A thoracic aortic aneurysm should be a consideration in the differential diagnosis for unilateral decrease or absence of ventilation and perfusion with a history or findings of mediastinal mass or aneurysm. |
| |
Keywords: | |
|
|