Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The aorta is mildly calcified and tortuous . Again seen are coarse interstitial markings distributed throughout both lungs , with a persistent left basilar opacity . These findings are unchanged over multiple prior examinations . No superimposed new consolidation , pneumothorax , or effusion is seen . Central pulmonary vessels are prominent , with mild interstitial edema , minimally changed since the ___ study .
    OUTPUT:
    
Top normal heart size with minimal interstitial edema , unchanged since ___ . Persistent left basilar opacity .