Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No new radiodense pericardial drain is visible and previously seen pigtail catheter had been removed before most recent prior study . Cardiac silhouette appears similar and central pulmonary vascular congestion , haziness and pleural fluid appear decreased . Leads appear intact and unchanged in position .
    OUTPUT:
    
No radiodense pericardial drain seen . Slight interval radiographic improvement in CHF