Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes have slightly decreased . Central bronchovascular congestion with mild edema persists , overall unchanged . Stable linear scarring in the left mid chest and in the right lung base . No pleural effusion or focal consolidation . The heart is enlarged , overall unchanged . Mediastinal contours are unchanged . No pneumothorax .
    OUTPUT:
    
Persistent mild bronchovascular congestion and edema , overall unchanged .