Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pleural effusion has nearly resolved . A Pleurx catheter is seen , however , the tip is not visualized . There is no pneumothorax . A loculated pleural effusion is again seen at the right lung apex . The known right lung mass is unchanged in size , measuring 6 .6 cm . The left lung is clear . The heart remains mild to moderately enlarged . The mediastinal contours are unremarkable .
    OUTPUT:
    
No pneumothorax after Pleurx catheter placement . The tip of the catheter is not visualized .