摘要
BACKGROUND As immune checkpoint inhibitors(ICIs)have become widely used in lung cancer treatment,immune-related adverse events(irAEs)warrant sufficient attention.Checkpoint inhibitor-related pneumonitis(CIP)is one of the most concerning adverse events as it is uncommon but life threatening.CASE SUMMARY The patient whose case is reported here experienced three episodes of CIP in a span of 4 mon.Interestingly,the three episodes of CIP involved different regions of the lung separately.Taking these pneumonitis areas together makes nearly a whole lung area.CONCLUSION This case showed that recurrent CIPs may occur repeatedly until the whole lung is involved,suggesting that the follow-up period of CIP should be long enough,and the rechallenge of ICI should be done with due caution.
