Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Minimal patchy atelectasis in the lung bases is likely atelectasis in the setting of low lung volumes . No focal consolidation , pleural effusion , or pneumothorax is present . No acute osseous abnormalities detected .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis . No focal consolidation to suggest pneumonia .