Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tiny right apical pneumothorax is unchanged . Right chest tube is in unchanged position , with the orientation of the tube suggestive of a fissural location , which predisposes the chest tube to malfunction . Lungs are clear . Heart size and mediastinal contour are stable . No pleural effusion .
    OUTPUT:
    
Tiny right apical pneumothorax , unchanged from the prior study . Right pleural tube could be fissural .