Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left - sided pacer device is stable in position , with leads extending to the expected positions of the right atrium and right ventricle , stable . The cardiac and mediastinal silhouettes are stable . Mild left base atelectasis is seen without focal consolidation . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Stable appearance of the left pacemaker . No pulmonary edema . The rest of the study is without significant interval change .