Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided PICC line is within the right atrium approximately 4 cm from the expected cavoatrial junction . The endotracheal tube is in good position . There is improved aeration with decreasing bibasal atelectatic changes . No interstitial edema . No significant pleural effusions . The cardiomediastinal silhouette is nonenlarged .
    OUTPUT:
    
A right - sided PICC line is within the right atrium .