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Portable Thermographic Screening for Detection of Acute Wallenberg's Syndrome
Published on: September 19, 2019
Lateral medullary infarction presenting contralateral palatal paresis.
Chien-Ming Chen1, Tzu-Ying Huang
1Department of Internal Medicine, Feng Yuan Hospital, Department of Health, Executive Yuan, Taichung, Taiwan.
Acta Neurologica Taiwanica
|March 14, 2009
Summary
This study reports a rare case of contralateral palatal paresis in lateral medullary infarction (LMI), challenging typical Wallenberg syndrome presentations. This finding suggests unusual neural pathway involvement in brainstem stroke patients.
Area of Science:
- Neurology
- Neuroscience
- Stroke Medicine
Background:
- Lateral medullary infarction (LMI), often associated with Wallenberg syndrome, typically causes ipsilateral neurological deficits.
- Palatopharyngeal weakness is a common symptom of LMI, usually affecting the same side as the brainstem lesion.
Observation:
- A 65-year-old female presented with acute left lateral medullary infarction.
- She exhibited mild hoarseness, dysphagia, gait ataxia, and contralateral sensory loss.
- Notably, she displayed right-sided palatal weakness, contrary to the expected ipsilateral deficit.
Findings:
- The palatal paresis was evident during voluntary phonation but absent during gag reflex testing.
- This contralateral presentation in LMI is unprecedented in medical literature.
- Potential mechanisms include atypical corticobulbar tract involvement or selective damage to reticular formation pathways.
Implications:
- This case expands the understanding of neurological deficits following lateral medullary infarction.
- It highlights the complexity of brainstem circuitry controlling swallowing and phonation.
- Further research is needed to elucidate the precise neuroanatomical basis of such rare contralateral presentations.
