Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . The left hilum is prominent . No additional areas of consolidation are seen . The right lung is clear . No pleural effusion or pneumothorax is seen . The cardiac silhouette is not enlarged . Mediastinum is unremarkable .
    OUTPUT:
    
Enlarged left hilum ; per patient 's ED notes , the patient had an outpatient CT revealing a left lung mass . Reference to that CT recommended .