Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Linear right basilar opacities are unchanged , potentially reflecting atelectasis and / or scarring . Blunting of the right costophrenic angle is similar , compatible with a small effusion . Previously noted nodular opacity projecting over the right lung base is not well seen on the current exam . Left lung is clear . No pneumothorax . No acute osseous abnormality is present .
    OUTPUT:
    
Right basilar linear opacities are unchanged , likely scarring and / or atelectasis with unchanged small right pleural effusion . No new focal consolidation .