Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left lung base opacity , similar to prior exam and better seen on the lateral view . No new focal consolidation , pleural effusion or pulmonary edema is seen . The heart is normal in size , and the mediastinal contours are normal .
    OUTPUT:
    
Left lung opacity , similar to prior exam and better seen on the lateral radiograph .