Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slightly low lung volumes , perhaps related to degree of respiratory effort . The lungs are otherwise clear . No focal consolidation , edema , effusion , or pneumothorax . Scoliosis of the thoracolumbar spine is overall unchanged . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Slightly low lung volumes but no evidence of acute intrathoracic process .