Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single lead left - sided pacemaker is stable in position . Cardiac silhouette size is top - normal . Mediastinal contours are stable and unremarkable . No focal consolidation is seen . There is no pleural effusion or pneumothorax . Degenerative changes are partially imaged along the spine .
    OUTPUT:
    
No acute cardiopulmonary process .