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Complications following Gamma Knife radiosurgery
1Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
Stereotactic and Functional Neurosurgery
|January 1, 1995
Summary
Gamma Knife radiosurgery for brain lesions showed a 23.6% rate of radiation-induced imaging changes in patients followed for over 6 months. Larger cavernous hemangiomas (over 1.5 cm3) were more prone to these changes.
Area of Science:
- Neurosurgery
- Radiation Oncology
Background:
- Gamma Knife radiosurgery is a minimally invasive treatment for various brain lesions.
- Assessing the long-term outcomes and complications of this procedure is crucial for patient management.
Purpose of the Study:
- To evaluate the efficacy and safety of Gamma Knife radiosurgery for treating brain lesions.
- To identify the incidence of complications and radiation-induced imaging changes.
Main Methods:
- Retrospective analysis of 213 lesions in 183 patients treated with Gamma Knife radiosurgery.
- Follow-up assessments included monitoring for complications and imaging changes for over 6 months.
Main Results:
- Two deaths occurred (1 direct, 1 indirect relation to irradiation).
- Nonfatal complications included 1 tumor bleed and 4 ventriculoperitoneal shunts for hydrocephalus.
- Radiation-induced imaging changes were observed in 23.6% of patients followed >6 months.
- All 4 cavernous hemangiomas >1.5 cm3 developed imaging changes.
Conclusions:
- Gamma Knife radiosurgery is associated with a manageable complication profile.
- Radiation-induced imaging changes are a notable outcome, particularly in larger cavernous hemangiomas.
- Careful patient selection and monitoring are essential for optimizing Gamma Knife radiosurgery outcomes.