Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low . Bronchovascular crowding likely accounts for subtle opacity in the lower lungs . There is no large effusion or pneumothorax . No convincing signs of pneumonia or CHF . The heart size appears within normal limits . The aorta is slightly unfolded . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Somewhat limited exam without overt signs of pneumonia or edema .