Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study ___ ___ . The heart is not significantly enlarged and there is no evidence of pulmonary vascular congestion . No new pulmonary parenchymal infiltrates can be identified , but we on previous examination identified , moderate amount of pleural effusion on the right base persists . In comparison with the next previous portable chest examination , there is now also evidence of a small amount of pleural effusion on the left side blunting the lateral pleural sinus . No pneumothorax is seen in the apical area .
    OUTPUT:
    
Persistent right - sided pleural effusion and mildly increasing effusion on the left as well . No evidence of new parenchymal infiltrates and no pneumothorax .