Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is again borderline in size , unchanged from the prior study . Mediastinal silhouette and hilar contours are otherwise unremarkable . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary abnormality . Borderline cardiomegaly , which may be of significance in this age group ; correlation with any history of cardiac or vascular disease is recommended .