Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC tip projects over the mid superior vena cava . No pneumothorax is detected . Lung volumes are low with mild pulmonary edema . Cardiomegaly persists . No pleural effusion or focal consolidation is seen . Pacing hardware , surgical clips , and sternal wires are again seen .
    OUTPUT:
    
Right PICC tip projecting over the mid superior vena cava .