Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the cardiac silhouette and pulmonary vasculature . Probable moderate cardiomegaly . Mediastinal contours and hilar contours are otherwise preserved . Mild bibasilar atelectasis . Lungs otherwise grossly clear . No dense consolidation to suggest pneumonia . No effusion pneumothorax .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis . No conclusive evidence of pneumonia .