Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with the scout image from CT from ___ , there may be slight increase in opacity over the right middle lobe . In comparison with chest radiographs from ___ , left - sided opacity has significantly decreased . Known left hilar mass is better evaluated on CT there is a left midlung atelectasis in left mid lung and left base linear atelectasis / scarring . No pleural effusion or pneumothorax seen . The cardiac silhouette is not enlarged . The aorta is calcified .
    OUTPUT:
    
Possible slight increase in right middle lobe opacity may be due to underlying consolidation . Remainder of the exam remains unchanged since the scout image from CT from ___ . Known left hilar mass better assessed on CT .