Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest demonstrates unchanged mild - to - moderate cardiomegaly . The superior most sternotomy wire is fractured , as it was dating back to ___ . The previously seen right upper and lower lung opacities appear improved since the prior study . No new parenchymal opacities are identified . There is no pleural effusion , pulmonary edema or pneumothorax .
    OUTPUT:
    
Improved right upper and lower lung opacity likely represents resolving infection or asymmetric edema .