Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual lead left pectoral pacemaker is unchanged in position with leads terminating in the right atrium and right ventricle . The inspiratory lung volumes are appropriate . There is mild pulmonary vascular congestion . Reticulonodular opacities and prominent interstitial markings most pronounced in the right lung base may represent asymmetric pulmonary edema although superimposed infection is not excluded . Decreased trace pleural effusions are noted . No pneumothorax seen . The cardiac silhouette remains mildly enlarged . The mediastinal and hilar contours are stable with mild tortuosity of the thoracic aorta . Several clips are noted within the upper abdomen . Marked degenerative changes of the right shoulder are again seen .
    OUTPUT:
    
1 . Patchy opacity in the right lung base may represent asymmetric pulmonary edema although superimposed infection is not excluded . 2 . Mild pulmonary vascular congestion and decreased bilateral trace pleural effusion . 3 . Stable cardiomegaly .