Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral 3 lead pacemaker shows leads in unchanged position compared to the prior ___ studies . Marked cardiomegaly is increased from ___ but relatively unchanged in comparison to ___ likely related in part to AP technique . The mediastinal and hilar contours are unchanged . There is mild indistinctness of the pulmonary vessels suggesting mild pulmonary vascular congestion . Minimal right basilar atelectasis is present . No focal consolidation concerning for pneumonia , pleural effusion or pneumothorax is present .
    OUTPUT:
    
1 . Marked cardiomegaly , similar in appearance to ___ . 2 . Mild pulmonary vascular congestion .