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September 5, 2025Journal of Neurosurgery Case Lessons

Symptomatic cerebral hyperperfusion after occipital artery–posterior cerebral artery bypass in a patient with moyamoya disease: illustrative case

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Authors

JKJason T. KimataKTKikutaro TokairinHUHaruto Uchino

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Overview

Case report highlights symptomatic cerebral hyperperfusion due to bypass in a moyamoya patient, implying the need for careful management.

Key Points

  • Symptomatic cerebral hyperperfusion was observed after occipital artery-posterior cerebral artery bypass.
  • Postoperative single-photon emission CT revealed cerebral blood flow exceeding preoperative levels by 160%.
  • Management strategies including strict blood pressure control and anti-inflammatory therapy were key in addressing symptoms.
  • At the one-year follow-up, the patient remained free from symptoms and stroke recurrence.

Cite This Study

Kimata et al. (2025) studied this question.

synapsesocial.com/papers/68bb4d276d6d5674bcd01209https://doi.org/10.3171/case25486
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Late (5–20 years) outcomes after STA-MCA anastomosis and encephalo-duro-myo-arterio-pericranial synangiosis in patients with moyamoya disease2020 · 68 citations
  2. 2Edaravone Reduces Hyperperfusion-Related Neurological Deficits in Adult Moyamoya Disease2016 · 69 citations
  3. 3Predictors and Clinical Features of Postoperative Hyperperfusion after Surgical Revascularization for Moyamoya Disease2012 · 182 citations
  4. 4Effects of Extracranial–Intracranial Bypass for Patients With Hemorrhagic Moyamoya Disease2014 · 652 citations