Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right lung asymmetry is due to known prior right upper lobectomy . Lung is well inflated with stable upper lobe predominant hyperlucency compatible with emphysematous changes . Right lung base opacity is unchanged since ___ and likely due to right middle lobe parenchymal scarring . Heart size is mildly enlarged but stable since ___ . Aortosclerosis is stable . There are no sign of acute cardiopulmonary processes . Right surgical rib fractures are unchanged since ___ . There are no signs of vascular congestion or pulmonary edema .
    OUTPUT:
    
No sign of acute cardiopulmonary process .