Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral AICD is unchanged with two leads terminating in the right atrium and right ventricle . The cardiac silhouette remains severely enlarged , compatible with known dilated cardiomyopathy , which is particularly impressive on the lateral view . The mediastinal and hilar contours are unchanged . The lungs are relatively clear without focal consolidation , pleural effusion or pneumothorax . There is mild pulmonary vascular congestion but no overt edema .
    OUTPUT:
    
Stable severe cardiomegaly with mild pulmonary vascular congestion .