Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable semi-erect AP view of the chest . The right lung is clear . There is mild left basal atelectasis . No pleural effusions or pneumothorax . No focal parenchymal opacities concerning for pneumonia . The cardiac , mediastinal , and hilar contours are normal . No evidence of volume overload .
    OUTPUT:
    
Mild left basal atelectasis . No evidence of pneumonia or volume overload .