Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is stable in size . The aorta is tortuous and calcified at its knob . Bilateral airspace opacities are seen and are increased from the prior examination consistent suggestive of pulmonary edema and more confluent areas suggest possible underlying infection . No pneumothorax or large pleural effusion is seen .
    OUTPUT:
    
Bilateral airspace opacities are increased from the prior exam suggestive of pulmonary edema and possible underlying infection .