Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right small pneumothorax is unchanged since yesterday after thoracocentesis . Right pleural effusion has reaccumulated and is now small - to - moderate . There is mild volume overload without pulmonary edema . Prior sternotomy was done for CABG . Moderate cardiac contour enlargement is stable .
    OUTPUT:
    
Unchanged right small pneumothorax after thoracocentesis .