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Hypertrophic Olivary Degeneration After Pontine Hemorrhage: A Case Report

Introduction: Hypertrophic olivary degeneration (HOD) is a rarely neurologic disease, occurring after damage to the dentato-rubro-olivary pathway. Case presentation: A 50-year-old hypertensive man suffered pontine hemorrhage resulting in numerous neurological deficits. Neurologic examination 4 months after the hemorrhage showed mild to moderate improvement. 8 months after the hemorrhage, the patient developed truncal and limb tremors, unsteady gait and dysarthria. Magnetic resonance showed increasing bilateral hypertrophic olivary degeneration. Administration of clonazepam and levodopa were ineffective for symptom relief. Conclusion: This case was presented in order to describe the clinical manifestations of HOD and to recognize the possibility of hypertrophic olivary degeneration after the pontomesencephalic stroke.