Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate - to - severe cardiomegaly and mild widening of the mediastinum is chronic and unchanged since at least ___ . Scattered parenchymal opacities particularly at the lung bases as well as spiculated areas of probable scarring in the lung apices are unchanged since ___ . There is no clear superimposed opacity . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Scattered areas of increased parenchymal opacity are likely chronic and unchanged since ___ without suggestion of superimposed process .