Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right upper extremity access PICC line with its tip in the low SVC . No pneumothorax . Otherwise , no change from prior . Mildly elevated right hemidiaphragm is unchanged . Cardiomediastinal silhouette is unchanged . Bony structures are intact .
    OUTPUT:
    
Placement of a right upper extremity PICC line in appropriate position .