Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable . There is mild vascular congestion . There is an area of chronic scarring and atelectasis in the left retrocardiac space and left lower lung . Atelectasis at the right lung base is unchanged . Small bilateral pleural effusions are unchanged . There is no pneumothorax . Right PICC line and esophageal stent remain in place .
    OUTPUT:
    
1 . Chronic scarring and atelectasis of the left lower lung and retrocardiac space . Depending upon clinical circumstances , these findings could represent early pneumonia . 2 . Unchanged small bilateral pleural effusions with mild vascular congestion .