Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Wound vac is not visualized . The right hemidiaphragm is obscured by right pleural effusion and atelectasis which appears stable compared to prior chest x-ray . The left lung is clear . Cardiac size is normal . There is no pneumothorax . Again seen are bilateral rods and pedicle screws in place in the thoracolumbar spine . Hardware appears intact .
    OUTPUT:
    
Stable right pleural effusion and atelectasis .