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Updated: Jul 8, 2026

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Published on: June 18, 2021
Brainstem ischemia in acute herniation syndrome.
Syed I Hussain1, Charity Cordero-Tumangday, Fernando D Goldenberg
1Neurocritical Care and Acute Stroke Section, Department of Neurology and Surgery (Neurosurgery), The University of Chicago Medical Center, Chicago, Illinois 60637, USA.
Brain herniation from hemispheric mass lesions primarily injures the brainstem. In some cases, arterial compromise leading to brainstem ischemia is the main cause of injury, not just compression.
Area of Science:
- Neurology
- Neuroscience
- Pathology
Background:
- Brain herniation is a critical condition caused by hemispheric mass lesions.
- Injury typically affects the upper brainstem near the tentorial incisura.
Observation:
- Mechanical compression is often considered the primary cause of brainstem injury.
- This case highlights an alternative mechanism involving arterial compromise.
Findings:
- The patient's magnetic resonance imaging (MRI) and pathology revealed early brainstem ischemia.
- Arterial compromise was identified as the primary injury mechanism.
Implications:
- Understanding varied injury mechanisms in brain herniation is crucial for diagnosis and treatment.
- This finding may influence therapeutic strategies for patients with hemispheric mass lesions.
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