Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A 2 lead pacemaker is in - situ , unchanged in appearance compared to the prior study . Left upper abdominal surgical clips are unchanged . The trachea is central . The cardiomediastinal contour is unchanged compared to the prior study . Specifically , no widening of the mediastinum seen . No lobar consolidation or pneumothorax seen . No pleural effusions seen . Degenerative changes are seen throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process seen .