Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Position of the patient 's arms obscures the lungs on the lateral radiograph . Left chest wall pacemaker has 2 leads terminating in the right atrium and right ventricle unchanged since the study earlier this morning . There has been interval redistribution of layering right pleural effusion . There is no evidence of pneumothorax . Mild cardiomegaly is unchanged . The aortic knob is calcified .
    OUTPUT:
    
1 . Redistribution of small right pleural effusion . 2 . Left chest wall pacemaker leads are in stable position in the right atrium and right ventricle .