Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild left base atelectasis is seen there is no definite focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable , with the cardiac silhouette top - normal to mildly enlarged . .
    OUTPUT:
    
Left base atelectasis without definite focal consolidation .