Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The catheter of a left chest wall port terminates in the mid SVC . Increased opacities in the lung bases may represent atelectasis but pneumonia can not be excluded . No pleural effusion or pneumothorax . Heart size and cardiomediastinal contours are normal .
    OUTPUT:
    
Bibasilar opacities are consistent with atelectasis , but pneumonia can not be excluded in the appropriate clinical setting .