Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiomegaly , is unchanged . The mediastinal and hilar contours are stable . The lungs are well expanded and clear , without consolidation , pleural effusion or pneumothorax . Mild pulmonary vascular congestion without overt edema is noted . A right IJ approach dialysis catheter ends in the cavoatrial junction . A left chest wall AICD device is seen with the leads in the expected position of the right atrium and right ventricle .
    OUTPUT:
    
Severe stable cardiomegaly . Mild pulmonary vascular congestion .