Magnetic resonance imaging of unilateral olivary hypertrophy due to pontine tegmental hemorrhage: A case report

Shing Su Chen, Michael Mu Huo Teng*, Kuo Ning Shao, Jen Huey Chiang, Chang Yen Chang, Chao Bao Lao, Jiing Feng Lirng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Olivary hypertrophy (OH) is not a primary lesion but, rather, develops as a lesion of the Guillain-Morraret triangle, which is composed of the contralateral dentate nucleus, the ipsilateral red nucleus and the ipsilateral inferior olivary nucleus. OH is usually accompanied by palatal myoclonus or other involuntary movements such as extremity myorhythmia. One case of unilateral OH following ipsilateral pontine tegmental hemorrhage is presented. Magnetic resonance imaging (MRI) showed high signal intensity in the inferior olivary nuclei on T2- and proton-density-weighted images. Enlargement of the inferior olivary nuclei was also noted. MRI may currently be the only procedure capable of confirming the diagnosis.

Original languageEnglish
Pages (from-to)648-651
Number of pages4
JournalChinese Medical Journal (Taipei)
Volume62
Issue number9
StatePublished - Sep 1999

Keywords

  • Magnetic resonance imaging
  • Olivary hypertrophy
  • Pontine hemorrhage

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