Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which appears moderately enlarged . The mediastinal contours are unremarkable . Pulmonary vasculature is normal . Patchy opacities are demonstrated in the lung bases . Small bilateral pleural effusions are also noted . No pneumothorax is present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Low lung volumes . Patchy bibasilar airspace opacities may reflect atelectasis , aspiration or infection , with small bilateral pleural effusions .