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Related Experiment Videos

Persistent trigeminal artery associated with brainstem infarct--case report.

F Momma1, S Ohara, T Ohyama

  • 1Department of Neurosurgery, Yao Tokushukai Hospital, Osaka.

Neurologia Medico-Chirurgica
|May 1, 1992
PubMed
Summary
This summary is machine-generated.

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A rare persistent trigeminal artery variant likely caused a brainstem stroke in a 47-year-old male. This anatomical variation led to poor posterior fossa blood supply, resulting in a pontine lacunar infarct.

Area of Science:

  • Neurology
  • Vascular Neurology
  • Neuroanatomy

Background:

  • Lacunar infarcts in the pons can result from various cerebrovascular pathologies.
  • The persistent trigeminal artery (PTA) is a rare fetal variant of the Circle of Willis circulation.
  • Understanding variations in cerebral vasculature is crucial for diagnosing and managing ischemic events.

Observation:

  • A 47-year-old male presented with acute right hemiparesis and left facial numbness.
  • MRI revealed a lacunar infarct in the ventral pons.
  • Cerebral angiography identified a persistent trigeminal artery (PTA) connecting the internal carotid artery to the basilar artery.

Findings:

  • The patient exhibited hypoplastic vertebral arteries and a hypoplastic basilar artery distal to the PTA junction.

Related Experiment Videos

  • Posterior communicating arteries were rudimentary, indicating an embryonic configuration.
  • The posterior fossa circulation was largely isolated from the Circle of Willis.

    • Implications:

    • The study highlights the potential link between the persistent trigeminal artery variant and brainstem infarcts.
    • This anatomical anomaly may predispose individuals to ischemic events due to compromised posterior fossa vascular supply.
    • Recognition of such vascular variations is essential for accurate diagnosis and treatment strategies in stroke patients.