Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Minimal patchy opacities are seen in the lung bases , potentially atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are moderate multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Low lung volumes with minimal patchy bibasilar opacities , likely atelectasis . No focal consolidation to suggest pneumonia is identified .