Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Wires of a left chest wall pacer terminate over the right atrium and right ventricle . The heart is normal size with stable cardiomediastinal contours . Elevation of the apparent right hemidiaphragm with right lung base linear opacities is compatible with a new moderate - sized pleural effusion with adjacent atelectasis . No pneumothorax .
    OUTPUT:
    
New moderate - sized right pleural effusion with adjacent atelectasis .