Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear . The bilateral hila appear slightly more prominent than studies dating back to ___ , however , are not markedly increased compared to more recent studies . The cardiomediastinal silhouette and pleural surfaces are normal . No pulmonary edema , pleural effusions , or pneumothorax . No focal consolidations are seen .
    OUTPUT:
    
Bilateral hila are slightly more prominent than studies dating back to ___ , but are not markedly increased compared to more recent studies .