Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates well expanded lungs . There is bibasilar atelectasis without definite consolidation . Minimal left pleural effusion . Mediastinal and hilar contours are unremarkable . There is no pneumothorax .
    OUTPUT:
    
Bibasilar atelectasis without definite consolidation .