Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are unremarkable . No focal consolidations concerning for infection is identified . There is no pleural effusion or pneumothorax . There is a small linear area of scarring in the left lung base , stable compared to multiple exams dating back to at least ___ . There is no evidence of a pneumothorax .
    OUTPUT:
    
No new focal consolidations concerning for infection . No evidence of pulmonary edema .