Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding portable post-operative chest examination of ___ . Status post sternotomy . Post-operative moderate cardiac enlargement persists . Multiple surgical clips identified in anterior left side mediastinum indicative of recent bypass surgery . Bilateral plate atelectasis is again seen and similar to what has been shown on the frontal view of the portable examination of ___ . These atelectases are located mostly in the dorsal lobe areas . There is probably some mild degree of pleural effusion as the left - sided posterior pleural sinus can not be identified . Visibility of the right - sided posterior pleural sinus excludes , however , any free pleural effusion on that side . A right internal jugular approach central venous line is still present and seen to terminate overlying the right mediastinal structures at level 2 cm below the carina . Position is unchanged . No pneumothorax seen in the apical area . Comparison is extended to the most recent pre-operative chest examination which is dated ___ . It is noted that the pre-operative chest examination demonstrated a normal heart size . The present enlargement of the heart silhouette is consistent with post-operative findings which may be caused by post-operative pericardial clots and bleedings .
    OUTPUT:
    
Persistent bilateral basal atelectasis post-operatively . Only minor pleural fluid is seen on left base . No new parenchymal abnormalities and no marked congestion in the pulmonary venous circulation .