Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low bilaterally . No focal consolidation , pleural effusion , or pneumothorax . The heart is probably top - normal in size . The descending thoracic aorta appears slightly tortuous . The hila and pleura are grossly unremarkable . No acute osseous abnormality .
    OUTPUT:
    
Low lung volumes . No pneumonia .