Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Three transvenous pacemaker leads terminate in the right atrium , right ventricle , and left ventricle . Median sternotomy wires appear intact . Small bilateral pleural effusions , left greater than right , are grossly unchanged . Left lower lobe atelectasis is similarly unchanged . Mild cardiomegaly is unchanged . The mediastinal silhouette and hilar contours appear normal . There is no pneumothorax .
    OUTPUT:
    
1 . Biventricular pacemaker leads terminate in appropiate position . 2 . Small bilateral pleural effusions , left greater than right , are unchanged . Mild left lower lobe atelectasis is also unchanged .