Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded . Retrocardiac opacity worsened between ___ and ___ , persists . Heart size is exaggerated by AP technique and is likely normal . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Left retrocardiac consolidation , increased ___ to ___ , warrants CT evaluation .