Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta remains tortuous , and the hilar contours are stable . The pulmonary vasculature is normal . Streaky opacities in the lung bases are re- demonstrated , similar compared to the prior exam , and most likely reflective of atelectasis . Infection is not completely excluded . No pleural effusion or pneumothorax is seen . Partially imaged is cervical spinal fusion hardware . Mild elevation of the right hemidiaphragm is re - demonstrated , along with multiple clips in the right upper quadrant of the abdomen .
    OUTPUT:
    
Bibasilar airspace opacities likely reflect atelectasis though infection can not be completely excluded .