Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left - sided pacemaker is again seen with leads extending to the expected positions of the right atrium and right ventricle . The cardiomediastinal silhouette is stable with the cardiac silhouette mildly enlarged and the aortic calcified and tortuous . There is blunting of the bilateral costophrenic angles concerning for small bilateral pleural effusions . Perihilar opacities have slightly decreased in the interval with mild residual remaining which may be due to mild edema , underlying infection not excluded . No evidence of pneumothorax is seen .
    OUTPUT:
    
Small bilateral pleural effusions . Interval slight decrease in perihilar opacities which may represent mild pulmonary edema although infectious process not excluded .