Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the prior examination , there has been minimal interval change . The lung volumes are decreased . Redemonstrated is a right - sided AICD with leads noted to terminate within the right atrium and right ventricle . There is no evidence of associated pneumothorax . The patient is status post valve replacement with median sternotomy wires noted to be well - aligned . Redemonstrated is mild to moderate cardiomegaly , likely exaggerated by the decreased lung volumes . Stable , widening of the mediastinum is noted .
    OUTPUT:
    
Dual lead , right - sided AICD with leads seen terminating within the right atrium and right ventricle .