Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right IJ terminates at the caval atrial junction . The endotracheal tube terminates 4 .9 cm above the carinal . An orogastric tube is appropriately positioned . The cardiac and mediastinal contours are stable since the ___ examination , remaining within normal limits . There is no pneumothorax or pleural effusion . A persistent left retrocardiac opacity , likely reflecting atelectasis , is minimally changed over several recent radiographs .
    OUTPUT:
    
1 . Unchanged persistent left retrocardiac opacity . 2 . No new consolidation , effusion , or pneumothorax .