Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large right - sided pleural effusion has decreased in size after thoracentesis . A small right effusion remains . A thin vertical line at the peripheral right lung base is not explained by a normal structure . Lung markings are seen lateral to this line . Moderate cardiomegaly is unchanged . No consolidation is identified .
    OUTPUT:
    
Decrease in size in right - sided effusion status post thoracentesis . A thin line at the right base could represent a small anterior pneumothorax . Immediate repeat PA and Lateral chest radiograph is recommended . This finding was identified at ___ on ___ and immediately discussed via phone with Dr ___ at ___ .