Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . No focal consolidations . No pulmonary edema . The cardiomediastinal silhouette appears slightly enlarged compared to ___ , however this may be projectional . No pleural effusion . No pneumothorax .
    OUTPUT:
    
Borderline cardiomegaly , which may be projectional . Otherwise , normal chest radiograph .