Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Nerve stimulator generator pack projects over the left chest wall with lead coursing cephalad into the left aspect of the neck . There are low lung volumes . The heart size is normal , the mediastinal and hilar contours are unremarkable . There is mild crowding of the bronchovascular structures . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .