Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lung volumes are low . There is minimal patchy opacity in the lung bases likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes with minimal atelectasis in the lung bases . No focal consolidation to suggest pneumonia .