Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Multiple AP views of the chest provided . Mild atelectasis at the right lung base is improved . No pleural effusion . Small right apical pneumothorax is unchanged . Hilar and cardiomediastinal contours are normal . Minimally displaced rib fractures are unchanged . The aorta is mildly tortuous .
    OUTPUT:
    
Small to moderate , right apical pneumothorax and rib fractures are unchanged from ___ .