Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right basilar atelectasis is seen . Patchy right base opacity most likely relates atelectasis although infectious process is difficult to exclude in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Patchy right base opacity most likely due to atelectasis , although infectious process is difficult to exclude in the appropriate clinical setting .