Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ICD implant appears unchanged . The cardiac , mediastinal and hilar contours appear unchanged . Mild relative elevation of the left hemidiaphragm is also stable . Patchy scarring in the left upper lung appears unchanged . Otherwise , multifocal pulmonary opacities have more fully resolved . The lungs are mildly hyperinflated . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .