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 . Comparison is made with the next preceding portable chest examination with the patient in supine position as of ___ . Again noted is status post sternotomy and significant enlargement of the cardiac silhouette . Previously described permanent pacer in left axillary position with two intracavitary electrodes in unchanged location . Unchanged position of left internal jugular approach central venous line terminating in upper portion of SVC . No pneumothorax has developed . Diffuse haze over both lung bases as before obliterating the diaphragmatic contours and indicative of bilateral pleural effusions partially layering posteriorly . The pulmonary venous congestive pattern persists . An intra-aortic balloon pump device is seen to terminate in the descending thoracic aorta about 3 cm below the level of the lower thoracic arch contour . This is unchanged .
    OUTPUT:
    
No significant interval changes during the last 24 hours interval . The described changes with postoperative status , CHF , pleural effusion and intra-aortic balloon pump device in place is of course compatible with the patient 's hypoxia .