Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are low with resultant bronchovascular crowding . There is no focal consolidation concerning for pneumonia , pleural effusion or pneumothorax . No pulmonary vascular congestion or edema is seen . The cardiac silhouette is enlarged , but stable . The mediastinal contours are prominent , with tortuosity of the thoracic aorta , which is unchanged .
    OUTPUT:
    
Low lung volumes . No evidence of heart failure or volume overload .