IL1B and pleural empyema: Interestingly, although the role of IL‐1β in pleural inflammation, for example, in pleural empyema (Silva‐Mejías et al., 1995) and in pleurisy model that used carbon nanotubes (Murphy et al., 2012) has been extensively evaluated, its secretion by pleural mesothelial cells in the context of pleurodesis has not been studied so far.