Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation concerning for pneumonia . A linear density in the lingula likely reflects scarring or platelike atelectasis . No pleural effusion or pneumothorax is detected . There is biapical pleural thickening , which appears symmetrical . The pulmonary vasculature is not engorged and there is no overt pulmonary edema . The cardiac silhouette is mildly enlarged but stable . The mediastinal and hilar contours are within normal limits . There is mild calcification of the aortic knob . The patient is status post median sternotomy with intact appearing wires . Multilevel degenerative changes of the thoracic spine are noted on the lateral view .
    OUTPUT:
    
1 . No focal consolidation concerning for pneumonia . 2 . Stable cardiomegaly .