Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . There is a new triple - lead pacing device seen with lead tips in the coronary sinus , right ventricular apex and left atrium . Mitral and tricuspid prosthetic valves are again noted . The lungs are clear of confluent consolidation . Costophrenic angles are sharp . Cardiomediastinal silhouette is enlarged but stable . Atherosclerotic calcifications again noted at the arch .
    OUTPUT:
    
No significant interval change .