Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a three - lead pacemaker / ICD device with leads again terminating in the right atrium , right ventricle , and coronary sinus , respectively . The patient is status post coronary artery bypass graft surgery . The heart is moderately enlarged . The mediastinal and hilar contours appear unchanged . There is mild upper zone redistribution of the pulmonary vascularity without frank pulmonary edema . There is no pleural effusion or pneumothorax . Thin anterior flowing osteophyte formation is noted along the mid - to - lower thoracic spine .
    OUTPUT:
    
Mild vascular prominence suggesting pulmonary venous hypertension without frank edema . Cardiomegaly . Unchanged configuration of AICD device .