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Related Experiment Video

Updated: Oct 14, 2025

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
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Modified Orbitozygomatic Approach for Resecting a Parasellar Tumor in a Single Institution.

Jin Gu Kim1, Dong Hoon Lee1, Young Il Kim1

  • 1Department of Neurosurgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Brain Tumor Research and Treatment
|November 2, 2021
PubMed
Summary
This summary is machine-generated.

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A modified orbitozygomatic approach offers simpler, wider exposure for large parasellar tumors without resecting the zygomatic arch. This technique provides optimal access with minimal brain retraction, benefiting complex tumor surgeries.

Area of Science:

  • Neurosurgery
  • Surgical Oncology

Background:

  • Modified orbitozygomatic craniotomy offers simplicity and wide surgical exposure.
  • The conventional approach for large parasellar tumors can present surgical challenges.

Purpose of the Study:

  • To describe a modified orbitozygomatic approach for large parasellar tumor resection.
  • This modification avoids zygomatic arch resection, aiming for improved surgical access.

Main Methods:

  • Seven patients with parasellar tumors underwent surgery using the modified orbitozygomatic approach between April 2016 and December 2019.
  • Surgical procedures, clinical outcomes, and complications were analyzed retrospectively.

Main Results:

  • The study included various tumors: 3 meningiomas, 2 pituitary adenomas, 1 chondrosarcoma, and 1 schwannoma.
Keywords:
CraniotomyMeningiomaOrbitPituitary adenomaSkull baseZygoma

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  • The modified approach provided wider surgical freedom in the opticocarotid and prechiasmatic cisterns compared to frontotemporal craniotomy without orbitotomy.
  • Resection outcomes included 3 total, 2 subtotal, and 2 partial resections; permanent morbidities occurred in two patients (3rd nerve palsy, hemiparesis).

    • Conclusions:

    • The modified orbitozygomatic approach facilitates direct access to the interpeduncular cistern with minimal brain retraction.
    • This technique is recommended for surgeons facing challenges with conventional methods for parasellar tumor resection.