Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are small bilateral pleural effusions . Bibasilar opacities left greater than right could be due to atelectasis although superimposed infection is not excluded . The appearance is similar compared to prior . Superiorly , the lungs are clear . The cardiomediastinal silhouette is stable . Left chest wall dual lead pacing device and median sternotomy wires are again noted . No acute osseous abnormalities .
    OUTPUT:
    
Persistent small bilateral pleural effusions and bibasilar opacities left greater than right which may be due to secondary atelectasis , infection would be difficult to exclude , unchanged .