ArticleBMC neurology2025
Hypertrophic olivary degeneration following cerebral infarction: a case report.
Article in BMC neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundCerebral infarction is a common cause of hypertrophic olive degeneration (HOD), while cerebral infarction is the most common type of stroke in China. When patients with a history of brainstem infarction present with new or progressively worsening symptoms, hypertrophic inferior olivary nucleus degeneration should be considered in the diagnosis, this report details a case of hypertrophic inferior olivary nucleus degeneration after cerebral infarction. CASE PRESENTATION: A 55-year-old male patient reported experiencing dizziness, unsteady walking, and persistent vertigo, along with blurred vision and reduced visual acuity two years ago, without any clear precipitating factors. With a medical history of hypertension, diabetes, and multiple strokes, the patient sought further diagnosis and treatment at various hospitals and was diagnosed with cerebral infarction. After being treated at our hospital, The examination indicates left finger-nose test (+), palatal myoclonus, nystagmus, and increased muscle tone in the left limb, Magnetic resonance imaging (MRI) scans and enhancements of the head conducted in the radiology department of our hospital revealed swelling of the inferior olivary nucleus of the medulla oblongata, with patchy T1WI isosignal and T2WI high-signal foci, FLAIR sequences showing high signal, without enhancement.Given symptomatic treatment, the patient improved and was discharged.
conclusionsThe diagnosis of HOD needs to fulfill the following three points: first, typical clinical manifestations; second, damage to the Guillain-Mollaret triangle; and third, enlarged T2WI high signal over the inferior olivary nucleus. The author reports the diagnosis and treatment of a patient with HOD, whose main manifestations were "dizziness and unsteady walking", with the aim of improving clinicians' understanding of the disease, especially raising the alertness of HOD after stroke, and reducing missed diagnosis and misdiagnosis.
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