Abstract
BACKGROUND: Use of immune checkpoint inhibitors in treatment of gynecologic malignancies is increasing. Rare, but potentially fatal, immune-related neurologic adverse events may occur as a result of treatment. CASE: A 72 year old female with recurrent metastatic uterine adenocarcinoma received pembrolizumab and lenvatinib combination therapy. Following her second dose of pembrolizumab, the patient developed multiple neurologic symptoms. She was ultimately diagnosed with Guillain-Barre Syndrome based on neurologic evaluation with imaging, serum studies, and cerebrospinal fluid analysis. The patient was successfully treated with high-dose intravenous corticosteroids and intravenous immunoglobulin. CONCLUSION: Neurologic complications related to immune checkpoint inhibitor therapy are rare. It is imperative for gynecologic oncologists to be familiar with potentially fatal hazards of therapy to allow for rapid diagnosis and treatment.