Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . Lungs are well - expanded and clear without focal consolidation concerning for pneumonia . Mild left basilar atelectasis is noted . There is no pneumoperitoneum . Surgical clips are noted in the right upper abdomen as well as a CBD stent .
    OUTPUT:
    
Mild left basilar atelectasis . No acute cardiopulmonary process .