Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left - sided chest drain , in expected position . A moderate - to - large left pleural effusion has slightly decreased in size . Persistent left basilar opacity is likely a combination of pleural fluid and atelectasis . There is mild blunting of the right costophrenic angle , suggestive of a small right effusion as well . There is diffuse increased pulmonary vascular congestion as compared to prior examination . Relative increased density of the right upper lung may be due to poor inspiration , though attention on follow - up examination is recommended to exclude a developing infection . No pneumothorax is evident . Surgical clips project over the lateral right lung apex . There has been interval removal of a right central venous catheter . Median sternotomy wires appear intact .
    OUTPUT:
    
1 . Interval left chest tube placement with slight decrease in size of a moderate - to - large left pleural effusion . 2 . Increased pulmonary vascular congestion , now mild . 3 . Relative increased density of the right upper lobe may be due to poor inspiratory effort , though attention on follow - up is recommended .