Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded , with hyperlucency , flattening of the hemidiaphragms , and widening of the retrosternal clear space . Mild cardiomegaly , central venous congestion , and interstitial edema . However , there is no frank pulmonary edema . No frank consolidation , pleural effusions , or pneumothorax . There is S - shaped thoracolumbar scoliosis and multilevel bridging osteophytes .
    OUTPUT:
    
Mild volume overload .