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Renal cell carcinoma with central nervous system demyelination caused by nivolumab
Toshiki Oka1, Yoshiyuki Yamamoto1, Yohei Okuda1
1Department of Urology Osaka International Cancer Institute Osaka Japan.
Introduction:
Central nervous system demyelination caused by immune checkpoint inhibitors is a very rare condition.
Case Presentation:
A 65-year-old man who received nivolumab for renal cell carcinoma developed abnormal behavior, such as disagreeable speech and sudden anger. Brain-enhanced magnetic resonance imaging revealed multiple lesions with partial contrast effects in the cerebral white matter. We tentatively diagnosed demyelination caused by nivolumab, and performed steroid pulse therapy twice. After that, his symptoms improved. For the next 2 years, his symptoms did not recur, nor did his cancer progress.
Conclusion:
Demyelination caused by immune checkpoint inhibitors can be fatal and requires early diagnosis and treatment.
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