Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior exam , there has been no significant interval change . Cardiomegaly persists . Aortic calcification is noted . Pacing hardware appears appropriately positioned . No focal consolidation , pleural effusion , or pneumothorax is detected on this single frontal view .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .