Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar platelike subsegmental atelectasis is seen . There is slight blunting of the left costophrenic angle which may be due to atelectasis but trace pleural effusion is not excluded . No definite focal consolidation is seen . The lungs are relatively hyperinflated , suggesting chronic obstructive pulmonary disease . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Bibasilar atelectasis . Slight blunting of the left costophrenic angle may be due to atelectasis versus a trace pleural effusion . No definite focal consolidation .