Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided ICD with leads in the right atrium and biventricular position , stable in appearance . Metastatic or terminates in the low SVC . No pulmonary edema or pleural effusions . Mild cardiomegaly . No pneumothorax .
    OUTPUT:
    
Stable appearance of the defibrillator .