Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker / ICD device appears unchanged . The heart is mildly enlarged with left ventricular configuration . The mediastinal and hilar contours appear unchanged . There is similar elevation of the right hemidiaphragm compared to the left . Patchy right basilar atelectasis has resolved . A linear opacity in the left costophrenic angle suggests scarring that appears unchanged . Degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
No evidence of acute disease .