Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The Swan - Ganz catheter has been slightly withdrawn , with its tip now near the origin of the right pulmonary artery . The left - sided pacemaker / ICD is unchanged in position . There is a right - sided PICC ending in the mid SVC , as before . The lungs remain clear . Moderate cardiomegaly is unchanged . There are no definite pleural effusions . No pneumothorax .
    OUTPUT:
    
Slight interval withdrawal of the Swan - Ganz catheter , now ending in the proximal aspect of the right pulmonary artery .