Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding AP and lateral chest examination obtained during the afternoon of the preceding day . Again noted is status post sternotomy , moderate cardiac enlargement with prominence of the left ventricle and evidence of previous bypass surgery . Comparison of the frontal views demonstrates that there is an increased amount of left - sided pleural effusion obliterating the diaphragmatic contour of the left side and blunting the lateral pleural sinus . Suspicion for pneumonic infiltrate remains as suggested on the preceding examination can not be decided on this single view portable chest examination . Also note the comments made on previous report of ___ .
    OUTPUT:
    
Increasing signs of left - sided pleural effusion .