Abstract

Anti-Hu antibodies (anti-neuronal nuclear antibodies, type 1) are associated with paraneoplastic encephalomyelitis in adults, especially those with small cell lung cancer. Anti-Hu antibodies are extremely rare in children, but they have been observed in neuroblastoma with or without opsoclonus-myoclonus syndrome or in limbic encephalitis without associated malignancy.1 However, anti-Hu antibodies are not typically associated with clinical features of Rasmussen encephalitis (RE). Acknowledgment: The authors thank Sean J. Pittock, MD, for his assistance in the interpretation of serum and CSF anti-Hu antibody titers and for explaining the methodologic processes involved in the Mayo Clinic Paraneoplastic Antibody Panel.

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