An Extensive-stage Small-cell Lung Cancer Case With Preexisting Lambert-Eaton Myasthenic Syndrome Successfully Treated With an Immune Checkpoint Inhibitor

Clinical Practice Points

• •Immune checkpoint inhibitor (ICI) therapy could exacerbate preexisting active autoimmune diseases (AIDs), and the presence of preexisting AIDs might be associated with a greater risk of developing new immune-related adverse events (irAEs).
• •The safety of ICIs for patients with Lambert-Eaton myasthenic syndrome (LEMS), a neuromuscular autoimmune disease known as a paraneoplastic syndrome mainly...