Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest pacemaker with leads projecting to the a right ventricle is unchanged . Cardiomediastinal silhouettes are normal . Lung volumes are lower causing bronchovascular crowding . No focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Lower lung volumes , without focal consolidation concerning for pneumonia .