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  • Title: Transient Palatal Tremor and Action Induced Foot and Leg Dystonia due to Hypertrophic Olivary Degeneration: a Case Report.
    Author: Yang J, Yang J, Li B, Bao L.
    Journal: J Stroke Cerebrovasc Dis; 2020 Oct; 29(10):105147. PubMed ID: 32912540.
    Abstract:
    Hypertrophic olivary degeneration (HOD) is a rare phenomenon that occurs after various insults to the Guillain-mollaret triangle (GMT). HOD is unique because the degeneration of inferior olivary nucleus becomes hypertrophic rather than atrophic. In this study, a 31-year-old woman developed HOD after pontine cavernoma surgery had been performed. The clinical manifestation was involuntary intorsion of right lower extremity during walking, which has not been reported in the literature. The woman also presented with palatal tremor, the most classic symptom of HOD. HOD's imaging trait include olive hypertrophy with increased T2 signal intensity on MRI, which are corresponding to the pathological findings. HOD is a self-limiting disease and excessive treatments are unnecessary.
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