Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent mild - to - moderate pulmonary vascular congestion ; however , pulmonary edema is improved asymmetrically better on the right . Mediastinal silhouette remains stably at the upper limits of normal . Calcifications are noted at the aortic arch . Colonic interposition is again noted . Osseous structures remain normal .
    OUTPUT:
    
Continued mild - to - moderate vascular congestion . However , pulmonary edema has improved asymmetrically better on the right .