Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . Cardiac enlargement as before . Unchanged position of previously described permanent right - sided pacer with dual intracavitary electrode system , unchanged . Moderate pulmonary vascular congestion as before . Diffuse haze over the lung bases , slightly less marked as before but probably related to changes in patient 's position . No conclusive evidence of new discrete pulmonary parenchymal infiltrates on this portable chest examination . Status post sternotomy as before . Extensive calcifications seen in the wall of the aorta at the level of the arch . No pneumothorax is identified .
    OUTPUT:
    
Change of appearance of bilateral pleural effusions related to minor changes in patient 's position . No conclusive evidence of new acute pulmonary infiltrates . If such diagnosis is essential , recommend additional lateral view as basal lung spaces are obscured by pleural effusions .