Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Mild vascular congestion and pulmonary edema appear improved since ___ . Cardiomegaly , a moderate left pleural effusion and bibasilar atelectasis are unchanged . Mediastinal widening is unchanged since ___ .
    OUTPUT:
    
Slight improvement in congestive failure since ___ . Unchanged cardiomegaly and a moderate left pleural effusion .