An Unusual Case of Anti-FGFR3 Antibodies, Sensory Neuropathy, and Adie Pupil in a Patient With Hodgkin Lymphoma in Remission and Review of the Literature

Autoantibodies against fibroblast growth factor receptor 3 (FGFR3) are associated with sensory neuropathy. In this report, we describe the case of a woman with a remote history of Hodgkin lymphoma in remission who presented with unilateral Adie pupil, trigeminal neuropathy, and progressive sensory neuropathy. After 3 years without a known etiology and slow progression of symptoms, a trial of intravenous immunoglobulin (IVIg) was initiated and she subsequently tested positive for anti-FGFR3 antibodies. Despite the delay in treatment, she showed significant improvement with maintenance monthly IVIg therapy. In addition to the case report, we provide a review of the literature on anti-FGFR3-positive sensory neuropathy. To our knowledge, this is the first report of Adie pupil in a patient with anti-FGFR3 antibodies.