Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is better aeration of lung fields compared to previous chest radiograph . Previous minimal fluid overload has resolved . The left cardiac device is unchanged in position , and the wires end at the right atrium , right ventricle and left ventricle . No pneumothorax is seen , and the cardiac and mediastinal contours are normal .
    OUTPUT:
    
No pneumothorax . The left BiV - ICD has leads ending in the right atrium , right ventricle , and left ventricle .