Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . A mild S - shaped scoliosis of the thoracolumbar spine is unchanged with aortic tortuosity . The hilar contours are normal . No upper abdominal or osseous abnormality is identified .
    OUTPUT:
    
No pneumonia , edema or pneumothorax .