Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC again seen with tip in the mid to lower SVC . Low lung volumes again noted with probable right basilar atelectasis . Superiorly , the lungs are clear . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
No significant interval change . Right basilar opacity likely atelectasis given low lung volumes .