Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , mediastinal , and hilar contours are unremarkable . Again noted is left basilar atelectasis . The left hemidiaphragm appears somewhat obscured , but no definite consolidation is identified . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Small atelectasis at the left lung basis . Otherwise unremarkable chest radiograph . .