Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is left basilar segmental atelectasis , but no focal parenchymal opacities concerning for pneumonia . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . Eventration of both hemidiaphragms are not significantly changed from prior exam .
    OUTPUT:
    
Left basilar atelectasis . Otherwise , unremarkable chest radiographic examination .