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Updated: Aug 24, 2025

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Endoscopic endonasal approach for brainstem cavernous malformation.

Ezequiel Goldschmidt1, Andrew S Venteicher1, Maximiliano Nuñez1

  • 1Departments of Neurosurgery and.

Neurosurgical Focus: Video
|October 26, 2022
PubMed
Summary
This summary is machine-generated.

This study details a successful endoscopic endonasal approach for removing a mesencephalic cavernous malformation. The minimally invasive technique avoided critical neural structures, leading to a good patient outcome.

Keywords:
brainstemcavernous malformationendonasal endoscopic approachvideo

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Area of Science:

  • Neurosurgery
  • Endoscopic Skull Base Surgery
  • Cerebrovascular Surgery

Background:

  • Mesencephalic cavernous malformations are rare and challenging lesions.
  • Recurrent hemorrhage poses significant risks.
  • Surgical approaches must balance lesion access with preservation of critical neurovascular structures.

Purpose of the Study:

  • To describe the successful surgical removal of a mesencephalic cavernous malformation using an endoscopic endonasal approach.
  • To evaluate the feasibility and safety of this minimally invasive technique for deep-seated brainstem lesions.

Main Methods:

  • High-definition fiber tracking and FIESTA imaging were used for surgical planning.
  • An endoscopic endonasal approach with interdural pituitary hemitransposition was performed.
  • Complete piecemeal resection of the cavernous malformation was achieved, with careful dissection of thalamoperforating arteries.

Main Results:

  • The endoscopic endonasal approach provided safe access to the mesencephalic cavernous malformation.
  • Postoperative MRI confirmed no infarct.
  • Transient worsening of motor evoked potentials and hemiparesis resolved to baseline within 1 month.

Conclusions:

  • The endoscopic endonasal approach is a viable and effective surgical option for select mesencephalic cavernous malformations.
  • This technique minimizes transgression of normal brain parenchyma compared to traditional open approaches.
  • Careful surgical technique and neurophysiological monitoring are crucial for optimal outcomes.