Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Substantial stable cardiomegaly , without evidence of pulmonary vascular congestion . Median sternotomy wires are intact . Biventricular ICD pacing device in the left chest wall with intact wires appears unchanged . Lung fields are clear without focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . Biventricular ICD pacing device in the left chest wall appears unchanged . 2 . Stable substantial cardiomegaly without pulmonary vascular congestion may suggest cardiomyopathy or pericardial effusion .