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Surgery for mesencephalic cavernoma: case report.

Shi-Ting Li1, Jun Zhong

  • 1Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China.

Surgical Neurology
|March 14, 2007
PubMed
Summary
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A rare mesencephalic cavernoma causing parkinsonism tremor was successfully removed via a frontotemporal transsylvian approach. Surgical intervention resolved the tremor and improved motor function, demonstrating the efficacy of this surgical strategy.

Area of Science:

  • Neurosurgery
  • Neurology
  • Vascular Neurosurgery

Background:

  • Intrinsic midbrain tumors present significant neurosurgical challenges due to prognosis and surgical risks.
  • Cavernomas in the anterior-mesencephalic region are rare and can manifest with atypical symptoms like parkinsonism tremor.

Observation:

  • A 42-year-old woman presented with a 10-year history of progressive, uncontrollable resting tremor, partial right ophthalmoplegia, and asymmetric limb weakness.
  • MRI revealed a popcorn-like lesion in the right ventral midbrain, adjacent to the medial cerebral peduncle.

Findings:

  • A frontotemporal transsylvian approach via orbitozygomatic craniotomy allowed for en bloc resection of the mesencephalic cavernoma.
  • Postoperatively, the patient experienced dramatic resolution of tremor and improved motor strength in the left lower extremity.

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Implications:

  • Surgical resection of symptomatic mesencephalic cavernomas is indicated for patients with recurrent hemorrhage or significant neurological deficits.
  • The frontotemporal transsylvian approach offers a viable and safe route for accessing and resecting anterior-mesencephalic lesions, leading to favorable outcomes.