Multiple aneurysms arising from the origin of a duplication of the middle cerebral artery

Emiko Hori1, Kunikazu Kurosaki, Nobuhisa Matsumura

  • 1Department of Neurosurgery, Toyama Red Cross Hospital, University Toyama, Japan. ehori-tym@umin.ac.jp

Insights

Duplication of the middle cerebral artery, a rare condition, is linked to a high rate of dangerous aneurysms. Early and aggressive treatment is crucial for patients with this vascular anomaly.

Area of Science:

  • Neurology
  • Vascular Surgery
  • Radiology

Background:

  • Duplication of the middle cerebral artery (MCA) is a rare congenital anomaly originating from the internal carotid artery.
  • Aneurysms associated with MCA duplication are infrequently reported, posing unique clinical challenges.

Observation:

  • A review of literature identified 14 cases of aneurysms at the origin of MCA duplication.
  • Notably, 5 of these patients presented with multiple intracranial aneurysms.

Findings:

  • Aneurysms arising from MCA duplication demonstrate a significantly higher rupture rate compared to aneurysms at other cerebral locations.
  • The complex anatomy may predispose these lesions to rupture.

Implications:

  • Aggressive management strategies are indicated for aneurysms associated with MCA duplication due to their high rupture risk.
  • Further research into the specific pathophysiology and optimal treatment of these rare aneurysms is warranted.

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