Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No change in the a left transsubclavian right ventricular defibrillator lead . No change in moderate cardiomegaly . The lungs are clear without focal consolidation or pulmonary edema . No pneumothorax or pleural effusion . The mediastinum is not widened .
    OUTPUT:
    
No significant interval change . No pneumothorax .