# Bilateral Hypertrophic Olivary Degeneration Following Unilateral Mesencephalic Hemorrhage

**Authors:** Saeed Razmeh, Amir Mohammad Dashti, Amir Hassan Habibi

PMC · DOI: 10.1002/ccr3.72005 · 2026-02-03

## TL;DR

A midbrain hemorrhage can lead to bilateral hypertrophic olivary degeneration, causing symptoms like palatal myoclonus and tinnitus.

## Contribution

Highlights the clinical relevance of bilateral hypertrophic olivary degeneration following unilateral midbrain hemorrhage.

## Key findings

- Unilateral midbrain hemorrhage can lead to bilateral hypertrophic olivary degeneration.
- Symptoms include palatal myoclonus, dysarthria, and tinnitus.
- Timely diagnosis and symptom management are crucial for effective care.

## Abstract

After a unilateral midbrain hemorrhage, clinicians should recognize that bilateral hypertrophic olivary degeneration may occur, presenting as palatal myoclonus, dysarthria, or tinnitus. This highlights the necessity for timely diagnosis and effective symptom management.

## Full-text entities

- **Diseases:** dysarthria (MESH:D004401), midbrain hemorrhage (MESH:D020203), Mesencephalic Hemorrhage (MESH:D020295), palatal myoclonus (MESH:D009207), Hypertrophic Olivary Degeneration (MESH:D009410), tinnitus (MESH:D014012)

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12998260/full.md

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Source: https://tomesphere.com/paper/PMC12998260