Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right PICC tip now appears to terminate in the right atrium and should be retracted 3 cm to place in the low SVC . A tracheostomy tube is unchanged in position . Multiple mediastinal wires are aligned and intact . A tricuspid valve ring is noted . In comparison to the most recent prior study , there has been interval right thoracentesis with significant decrease in size of right pleural effusion , now with small residual pleural fluid in the right lung base . The right lung is well aerated . No pneumothorax is detected . The left lung base demonstrates persistent opacification , likely a combination of pleural fluid and underlying atelectasis . Mild residual atelectasis is present in the right lung base . There is persistent mild pulmonary edema . The cardiomediastinal silhouette is stably prominent .
    OUTPUT:
    
1 . Right PICC tip in right atrium should be retracted 3 cm to place in the low SVC . 2 . Significantly improved aeration at the right lung and decreased amount of pleural fluid , status post right thoracentesis . No pneumothorax . 3 . Persistent left basilar opacification , likely a combination of pleural fluid and underlying atelectasis or consolidation . 4 . Unchanged mild pulmonary edema .