Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right pigtail pleural drain is unchanged in position and terminates in the posterior right chest . A small right apical pneumothorax is slightly larger or new from yesterday evening . The lungs are clear . There is no pleural effusion or focal airspace consolidation . Heart is normal size . The mediastinal and hilar structures are unremarkable . A VP shunt courses in the anterior subcutaneous tissues .
    OUTPUT:
    
Small right apical pneumothorax , slightly larger new from yesterday evening .