Summary
Two patients with unilateral olivary hypertrophy (OH) following a pontine tegmental hematoma are presented. Both showed palatal myoclonus and one patient showed an extremity myorhythmia on the opposite side of OH. the magnetic resonance (MR) examination demonstrated an abnormal unilateral hyperintense lesion in the ventral part of medulla oblongata on T2-weighted images. The MR findings were highly suggestive of the pathological nature of the lesion, showing the value of MR.
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References
Guillan G, Mollaret P (1931) Deux cas de myoclonies synchrones et rhythmees velo-pharyngo-laryngo-oculo-diaphragmatiques. Le probleme anatomique et physio-pathologique de ce syndrome. Rev Neurol 2: 545–566
Jellinger K (1973) Hypertrophy of the inferior olives. Z Neurol 205: 153–174
Matsuo F, Ajax ET (1979) Palatal myoclonus and denervation supersensitivity in the central nervous system. Ann Neurol 5: 72–78
Masucci EF, Kurtzke JF, Saini N (1984) Myorhythmia: a widespread movement disorder. Clinicopathological correlation. Brain 107: 53–79
Sperling MR, Herrmann CJr (1985) Syndrome of palatal myoclonus and progressive ataxia: two cases with magnetic resonance imaging. Neurology 35: 1212–1214
Yokota T, Hirashima F, Furukawa T, Tsukagoshi H, Yoshikawa H (1989) MRI findings of inferior olives in palatal myoclonus. J Neurol 236: 115–116
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Hirono, N., Kameyama, M., Kobayashi, Y. et al. MR demonstration of a unilateral olivary hypertrophy caused by pontine tegmental hematoma. Neuroradiology 32, 340–342 (1990). https://doi.org/10.1007/BF00593060
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DOI: https://doi.org/10.1007/BF00593060