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Gamma knife radiosurgery for craniopharyngiomas
W Y Chung1, D H Pan, C Y Shiau
1Department of Neurosurgery, Cancer Center, Taipei Veterans General Hospital and National Yang-Ming University, Taiwan, Republic of China.
Journal of Neurosurgery
|January 6, 2001
Summary
Gamma knife radiosurgery (GKS) combined with stereotactic procedures offers effective tumor control for craniopharyngiomas. This multimodality approach improves patient survival and long-term outcomes.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Oncology
Background:
- Craniopharyngiomas are rare tumors often requiring complex management.
- Gamma knife radiosurgery (GKS) is a stereotactic technique used for brain tumors.
- Adjuvant stereotactic procedures can complement primary treatments.
Purpose of the Study:
- To evaluate the efficacy of GKS and adjuvant stereotactic procedures in treating craniopharyngiomas.
- To assess tumor control and clinical outcomes in patients with craniopharyngiomas.
Main Methods:
- Retrospective analysis of 31 consecutive patients with craniopharyngiomas treated between 1993 and 1999.
- Treatment involved GKS with doses ranging from 9.5 to 16 Gy to the tumor margin.
- Adjuvant stereotactic aspiration or Ommaya reservoir implantation was used for cystic components.
Main Results:
- Tumor control was achieved in 87% of patients.
- 84% of patients experienced fair to excellent clinical outcomes after a mean follow-up of 36 months.
- No treatment-related mortality or significant neurological/endocrinological impairment was observed.
Conclusions:
- Multimodality management, including GKS and adjuvant stereotactic procedures, enhances survival quality and long-term tumor control for craniopharyngiomas.
- This approach is a viable alternative for recurrent or residual craniopharyngiomas when further surgery is not curative.