Related Experiment Video
Updated: May 16, 2026
08:01
Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
Published on: July 10, 2014
Ipsilateral sensorimotor deficits in lateral medullary infarction: a case report
Tetsuro Sameshima1, Akio Morita1, Yumiko Yamaoka1
1Department of Neurosurgery and Stroke Center, NTT Medical Center Tokyo, Japan.
Summary
A rare case of lateral medullary infarction caused severe right vertebral artery stenosis, leading to vertigo and right-sided weakness. This study highlights an unusual presentation of stroke affecting sensorimotor pathways.
Area of Science:
- Neurology
- Vascular Neurology
Background:
- Lateral medullary infarction (LMI) typically presents with specific neurological deficits.
- Ipsilateral sensorimotor deficits in the limb accompanying LMI are exceptionally rare.
Observation:
- A 32-year-old man experienced sudden occipital headache, vertigo, dysarthria, ataxia, Horner syndrome, and right hand numbness with mild hemiparesis.
- Magnetic resonance imaging revealed an acute infarction in the right caudal medulla.
- Magnetic resonance angiography demonstrated severe stenosis of the right vertebral artery.
Findings:
- The infarction's location in the caudal medulla correlated with the patient's ipsilateral sensorimotor deficits.
- The findings suggest the infarction involved pathways such as the dorsal column, decussating lemniscal fibers, or corticospinal fibers caudal to the pyramidal decussation.
Implications:
- This case expands the understanding of LMI presentations and associated neuroanatomical pathways.
- Severe vertebral artery stenosis is a critical underlying cause to consider in young patients with medullary infarction.
- Highlights the importance of advanced neuroimaging in diagnosing rare stroke syndromes.
