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Updated: May 22, 2026

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Gamma knife radiosurgery for skull base malignancies.

Jian Pan1, A-Li Liu, Zhong-Cheng Wang

  • 1Gamma Knife Center, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

Clinical Neurology and Neurosurgery
|May 15, 2012
PubMed
Summary

Gamma knife radiosurgery (GKRS) effectively treats skull base malignancies. This study shows GKRS offers significant progression-free and overall survival rates for primary and secondary tumors.

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Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Oncology

Background:

  • Skull base malignancies present significant treatment challenges.
  • Evaluating the efficacy and toxicity of Gamma Knife Radiosurgery (GKRS) is crucial for managing these complex tumors.

Purpose of the Study:

  • To assess the effectiveness and safety of GKRS for primary and secondary skull base malignancies.
  • To determine survival outcomes and patient-reported improvements after GKRS treatment.

Main Methods:

  • Retrospective analysis of 43 patients with primary or metastatic skull base tumors treated with GKRS.
  • Median tumor volume and prescription margin dose were recorded.
  • Follow-up included assessment of tumor regrowth, progression-free survival, and overall survival.

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Main Results:

  • Progression-free survival rates at 1 and 2 years were 89% and 62%, respectively.
  • Overall survival rates at 1 and 2 years were 74% and 45%, respectively.
  • 44% of patients reported improvement, with a low toxicity rate (2% experienced decreased vision).

Conclusions:

  • Gamma Knife Radiosurgery demonstrates efficacy in treating both primary and secondary malignant tumors of the skull base.
  • GKRS can be utilized as an initial standalone therapy or as an adjunct to other treatment modalities.
  • The findings support GKRS as a valuable option for managing challenging skull base malignancies.