Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new left upper extremity PICC terminates at the brachiocephalic venous confluence . The lung volumes are low . A right breast prosthesis is again noted . The heart is top - normal in size . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Left upper extremity PICC terminates at the brachiocephalic confluence . Low lung volumes .