Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph ___ at 08 : 24 is submitted .
    OUTPUT:
    
There is persistent but improving bilateral airspace process suggesting a component of resolving edema . The patient is status post median sternotomy . The heart remains markedly enlarged . The feeding tube , right internal jugular central line and right subclavian line are unchanged in position . The single lead left - sided pacer is unchanged in position . There is likely a small layering left effusion when correlated with chest CT ___ . No pneumothorax .