Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right Port -A - Cath tip projects over the upper SVC , unchanged . Lung volumes have improved in the interim . Mild left basilar atelectasis . Trace left pleural effusion . No focal consolidation , edema , or pneumothorax . The heart is normal in size .
    OUTPUT:
    
1 . Improved lung volumes . 2 . Trace left pleural effusion and atelectasis .