Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New left - sided atrioventricular pacemaker is in adequate position . There is no pneumothorax or pleural effusion . Pulmonary edema has completely resolved since ___ . Moderate cardiomegaly is unchanged . The aorta is tortuous , stable .
    OUTPUT:
    
1 . No pneumothorax after pacemaker placement . 2 . Mild pulmonary edema has completely resolved since ___ .