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Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
18:50

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment

Published on: September 25, 2009

Occlusion of the middle cerebral artery branch mimicking aneurysm

Jung Hwan Lee1, Jun Kyeung Ko, Sang Weon Lee

  • 1Department of Neurosurgery, School of Medicine, Pusan National University, Busan, Korea.

Journal of Korean Neurosurgical Society
|December 20, 2008
PubMed

Insights

Aneurysmal protrusions at the middle cerebral artery (MCA) bifurcation may not be aneurysms but occluded vessel stumps. This finding is crucial for accurate diagnosis and treatment planning in cerebrovascular cases.

Area of Science:

  • Neurology
  • Neuroradiology
  • Vascular Surgery

Background:

  • Cerebrovascular diseases present diagnostic challenges, particularly at arterial bifurcations.
  • Middle cerebral artery (MCA) aneurysms are common but can be mimicked by other vascular pathologies.

Observation:

  • A 26-year-old male presented with hemiparesis and imaging revealed a right MCA bifurcation lesion initially suspected as an aneurysm.
  • Preoperative angiography and intraoperative findings confirmed the lesion was the occluded proximal stump of the MCA middle trunk, not a true aneurysm.

Findings:

  • Angiographic "aneurysmal protrusions" at the MCA bifurcation can represent occluded vascular stumps.
  • Distinguishing between aneurysms and vascular stumps requires careful consideration of angioanatomical features and patient history.

Implications:

  • This case highlights the importance of considering vascular stumps in the differential diagnosis of MCA bifurcation lesions.
  • Accurate differentiation is critical for appropriate surgical planning, such as superficial temporal artery-MCA anastomosis, and avoiding misdiagnosis.
Keywords:
AneurysmMiddle cerebral arteryOcclusion

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