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Washington University Experience | BASIC PROCESSES | Olivary Hyperplasia | 3A1 Olivary Hyperplasia (Case 1) 1

The cause of olivary hyperplasia in this case (Case 1) was multiple infarcts and hemorrhage involving the brainstem and cerebellum interfering with descending tracts in the pons, particularly the origin and projections of the central tegmental tract and dentate nucleus in the cerebellum. This lesion shown in this distorted midbrain section involved red nuclei bilaterally. Lesion of the central tegmental tract can cause a distinctive syndrome of palatal myoclonus.

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