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Updated: Jun 10, 2026

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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
Decompressive craniectomy for acute disseminated encephalomyelitis.
A I Ahmed1, C A Eynon, L Kinton
1Division of Clinical Neurosciences, University of Southampton, LD83, Level D, South Academic Block, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK. a.ahmed@soton.ac.uk
Neurocritical Care
|August 17, 2010
Summary
Acute disseminated encephalomyelitis (ADEM) can rapidly cause severe brain swelling. Emergency surgery, like hemicraniectomy, may be life-saving for ADEM patients with hyperacute cerebral edema.
Area of Science:
- Neurology
- Neuroscience
- Demyelinating Diseases
Background:
- Acute disseminated encephalomyelitis (ADEM) is a rare neurological disorder characterized by acute demyelination.
- ADEM typically presents subacutely but can manifest with rapid intracerebral mass effect due to cerebral edema.
Observation:
- A case report details a patient with a hyperacute ADEM presentation.
- The patient experienced rapid loss of consciousness and focal neurological deficits.
Findings:
- Emergency hemicraniectomy and steroid treatment led to swift neurological improvement.
- The patient exhibited minimal long-term neurological deficits after three months.
Implications:
- Surgical decompression, such as hemicraniectomy, is crucial for life-saving intervention in hyperacute cerebral edema secondary to ADEM.
- Aggressive surgical management, similar to that for traumatic brain swelling, is supported by rapid recovery and favorable outcomes.

