Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is mildly enlarged with a left ventricular configuration . Lung volumes are low . The lungs are otherwise clear without focal or diffuse abnormality . No pleural effusion or pneumothorax . There is significant degenerative changes of the right acromioclavicular joint . Osseous structures are otherwise unremarkable . No radiopaque foreign body .
    OUTPUT:
    
Mild cardiomegaly . No evidence of fluid overload .