Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . No focal consolidation , pleural effusion , or pneumothorax is detected . Mild pulmonary vascular prominence and interstitial haze appears similar compared to prior exams dating back to at least ___ . Heart and mediastinal contours are stable .
    OUTPUT:
    
No radiographic evidence for acute change .