Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right chest pacer device in unchanged position with associated dual leads projecting over the right atrium and ventricle , respectively . Again seen is post CABG change with median sternotomy wires and mediastinal surgical clips . There is moderate enlargement of the cardiac silhouette , unchanged . Diffusely increased interstitial prominence likely reflects mild pulmonary vascular congestion . Retrocardiac opacity likely reflects basilar atelectasis . There is no focal lung consolidation . There is no pneumothorax . Left pleural effusion is small .
    OUTPUT:
    
Basilar atelectasis . No focal lung consolidation . Mild pulmonary vascular congestion . Overall , stable chest radiograph .