Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Streaky linear opacities in the left lower lobe likely reflect areas of atelectasis . Small bilateral pleural effusions are present , as seen on the previous exam . No pneumothorax is present . There are mild multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Small bilateral pleural effusions and left basilar atelectasis .