Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer device is stable in position . There is mild central vascular engorgement without overt pulmonary edema . Right lower lobe opacity seen on the frontal view is not well seen on the lateral view and may represent atelectasis or confluence of vascular structures although subtle consolidation is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
No acute cardiopulmonary process .