Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly reduced . The cardiac , mediastinal and hilar contours are unchanged and within normal limits . The pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities are seen . A left - sided vagal nerve stimulator device again partially obscures the left costophrenic angle .
    OUTPUT:
    
No acute cardiopulmonary abnormality .