Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower cervical fusion hardware is incompletely imaged . A right PICC terminates at the cavoatrial junction . Multiple sternal wires denote prior median sternotomy . The heart is mildly enlarged . The central pulmonary vessels are engorged ; however , there is no interstitial edema . Trace bilateral pleural effusions have improved since ___ . Persistent moderate left lower lobe atelectasis is unchanged since ___ .
    OUTPUT:
    
1 . Improvement of small bilateral pleural effusions . 2 . Persistent left lower atelectasis .