Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is mild left base atelectasis . No focal consolidation is seen . There is no pleural effusion or pneumothorax . Anterior wedging of a lower thoracic vertebral body is stable since the prior study .
    OUTPUT:
    
Left base atelectasis . Otherwise , no acute cardiopulmonary process .