Symptomatic palatal tremor is not limited to the activity of guillain-mollaret triangle: A functional magnetic resonance imaging case study
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چکیده
A 57-year-old man was admitted to our clinic because of speech and swallowing disorder for six months. Palatal tremor and left upper extremity myorhythmia appeared on examination. Magnetic resonance imaging showed hypertrophic olivary degeneration, dentate pathology, Wallerian degeneration, and left parietal cystic encephalomalacia. Functional magnetic resonance imaging study of the brain showed prominent activation on the bilateral globus pallidus and thalamus. We suggest that involuntary movements were introduced by the nuclei of the basal ganglia as a result of olivary dysinhibition.
منابع مشابه
Bilateral Hypertrophic Olivary Degeneration and Holmes Tremor without Palatal Tremor: An Unusual Association
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 ...
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BACKGROUND AND PURPOSE Hypertrophic olivary degeneration (HOD) is usually caused by a lesion in the triangle of Guillain and Mollaret and presents clinically as palatal tremor. Although the imaging features have been well described, the temporal course of hypertrophy and T2 signal increase in the inferior olivary nucleus (ION) has not been fully characterized. Our purpose was to evaluate the ti...
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متن کاملProminent activation of the putamen during essential palatal tremor: a functional MR imaging case study.
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BACKGROUND Hypertrophic olivary degeneration (HOD) is a rare phenomenon, probably related to transsynaptic degeneration of the inferior olivary nucleus. It usually occurs as a response to primary injury of dento-rubro-olivary pathways. CASE REPORT A young man developed Holmes' tremor 7 months after a cavernous malformation bleed in the midbrain. Typical findings of HOD were observed in the ma...
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تاریخ انتشار 2012