Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear , well - expanded lungs without pleural effusion or pneumothorax . The cardiac silhouette is ___ ; . Unchanged hilar prominence is consistent with patient 's known lymphadenopathy .
    OUTPUT:
    
Unchanged hilar lymphadenopathy , without acute chest abnormality .