Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following large volume right thoracentesis , a small right pneumothorax has developed at the apex , as well as loculated hydropneumothoraces at the right base laterally . The right lung has re-expanded , but note is made of poorly defined opacities in the perihilar and basilar regions , likely due to re-expansion pulmonary edema following large - volume thoracentesis . Minimal poorly defined opacities persist at the left lung base , and note is made of a probable small persistent left pleural effusion .
    OUTPUT:
    
Small right pneumothorax following thoracentesis , as well as probable mild re-expansion pulmonary edema . Pneumothorax has been communicated by telephone to Dr . ___ on ___ at 4 : 15 p .m .