Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with the study of ___ , the degree of pulmonary vascular congestion may have slightly decreased in this patient with continued substantial enlargement of the cardiac silhouette . The possibility of supervening interstitial lung disease is difficult to assess on plain radiograph , but was apparent on the CT study of ___ . No acute focal pneumonia . Central catheter remains in place .
    OUTPUT:
    
Some improvement in still prominent pulmonary vascular congestion .