Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volume is low , decreased compared to ___ . There is pulmonary vessel engorgement , suggestive of volume overload . Mediastinum is widened , possibly secondary to the pulmonary vessel congestion , however aortic pathology can not be ruled out . Aortic contour is not clearly visualized and may appear artificially widened due to rotated position . Cardiac silhouette is enlarged .
    OUTPUT:
    
Mediastinum is widened , possibly secondary to the pulmonary vessel congestion , however aortic pathology can not be ruled out . Repeat conventional chest radiograph with erect AP view is recommended . If there is high clinical concern for aortic pathology , CT arteriogram can be obtained .