Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Interval placement of a left upper extremity PICC line with its tip residing in the region of the low SVC . No pneumothorax or pleural effusion . Vague opacity projecting over the left lower lung is unchanged .
    OUTPUT:
    
Appropriately positioned left upper extremity PICC line .