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Updated: May 3, 2026
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Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
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Perimesencephalic Hemorrhagic-Pontine Infarction Syndrome: Miler Fisher's Hint to Subarachnoid Paramedian Artery
1Neurology and Stroke Unit Department, Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceicao, Porto Alegre, Rio Grande Do Sul, Brazil.
Case Reports in Neurological Medicine
|November 24, 2025
Summary
A rare stroke syndrome, perimesencephalic hemorrhage with paramedian pontine infarction, suggests a ruptured brainstem perforator artery. This case highlights a potential cause of hemorrhagic-ischemic brainstem syndrome.
Area of Science:
- Neurology
- Neuroimaging
- Vascular Neurology
Background:
- Subarachnoid hemorrhage (SAH) typically results from ruptured aneurysms.
- Perimesencephalic SAH (PPH) is a subtype with a different etiology and prognosis.
- Concomitant brainstem infarction is an uncommon complication of PPH.
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