Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated are chronic findings of bilateral parenchymal opacities , most notable within the right upper lobe and left mid lung , which are grossly unchanged from prior examination . The background lung parenchyma appears grossly clear without evidence of acute superimposed process . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is unchanged . Metallic densities again project over the left lung apex .
    OUTPUT:
    
Chronic bilateral parenchymal opacities without convincing evidence for superimposed acute cardiopulmonary process .