Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no visible pneumothorax . The right pleural effusion has decreased significantly post - thoracocentesis . There is still a very mild residual pleural effusion . The right lung mass is seen at the right upper lobe and there is a convexity of the right hilum compatible with the lymphadenopathies seen on the CT scan . The left lung is unremarkable . The mediastinal and cardiac contour are unchanged .
    OUTPUT:
    
There is no pneumothorax post - thoracocentesis . The right pleural effusion has decreased significantly .