Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal , moderate right pleural effusion seen on ___ exam is now small . There is no left pleural effusion . There is no focal consolidation . No pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is top normal . Moderate hiatal hernia is apparent . There is mild perihilar vascular congestion . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
1 . Small right pleural effusion has significantly decreased in size since ___ exam . No focal consolidation or pulmonary edema . 2 . Moderate hiatal hernia .