Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left subclavian central venous catheter terminates in the mid to low SVC . The ET and nasogastric tubes are unchanged . There is no pneumothorax . The right basilar airspace opacity is more asymmetric today , and in the appropriate clinical context , infection or aspiration would be difficult to exclude . A small right pleural effusion with bibasilar subsegmental atelectasis is unchanged .
    OUTPUT:
    
More asymmetric right basilar airspace opacity may be due to infection or aspiration . Stable small right pleural effusion and bibasilar subsegmental atelectasis .