Background: Lesions in the Guillain-Mollaret triangle or dentate-rubro-olivary pathway may lead to hypertrophic olivary degeneration (HOD), a secondary trans-synaptic degeneration of the inferior olivary nucleus. HOD is usually associated with palatal tremor and rarely with Holmes tremor. Bilateral HOD is a very unusual condition and very few cases are reported.
Case Report: We report here two cases of bilateral HOD after two different vascular lesions located at the decussation of superior cerebellar peduncles, thus impairing both central tegmental tracts and interrupting bilaterally the dentate-rubral-olivary pathway. Interestingly, both developed bilateral Holmes tremor but not palatal tremor.
Discussion: Lesions in some of the components in the Guillain-Mollaret triangle may develop Holmes tremor with HOD and without palatal tremor. Magnetic resonance imaging is an invaluable tool in these cases. Better understanding of the pathways in this loop is needed.
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| http://dx.doi.org/10.7916/D87944SS | DOI Listing |
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- This study examines the effectiveness of a new surgical technique, called MRI-guided laser interstitial thermal therapy (MRIgLITT), focusing on its impact on tremor severity, quality of life (QOL), and adverse effects in patients with persistent HT.
- Results showed notable improvements in tremor severity and QOL, with patients experiencing a 41% reduction in tremors at 3 months and a 29% reduction at 12 months post-surgery, indicating the potential benefits of this treatment approach.
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