Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is noted with lead terminating in the right ventricle . The heart size is normal . The mediastinal and hilar contours are within normal limits . The pulmonary vascularity is not engorged . Lungs are clear . Minimal blunting of the left costophrenic angle posterior on the left may suggest a trace pleural effusion . No right sided pleural effusion or pneumothorax is present . Multilevel degenerative changes of the thoracic spine with anterior osteophyte formation is present .
    OUTPUT:
    
Mild blunting of the left costophrenic angle posterior suggestive of a trace pleural effusion . Otherwise , no acute cardiopulmonary abnormality .