Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiograph from the same day , right - sided PICC has been pulled back and the tip now at the an low SVC . Implantable defibrillator , and Swan - Ganz unchanged in position . Pulmonary vascular congestion has improved . Moderate cardiomegaly persists . No pneumothorax or pleural effusion .
    OUTPUT:
    
New right - sided PICC in the mid to low SVC