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Radiosurgery for cranial base chordomas and chondrosarcomas
Sunil Krishnan1, Robert L Foote, Paul D Brown
1Division of Radiation Oncology, Department of Oncology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA.
Neurosurgery
|March 29, 2005
Summary
Stereotactic radiosurgery offers some tumor control for cranial base chordomas and chondrosarcomas. However, treatment complications are frequent, particularly when combined with other radiation therapies.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Oncology
Background:
- Cranial base chordomas and chondrosarcomas present significant therapeutic challenges.
- Effective management strategies are crucial for improving patient outcomes.
Purpose of the Study:
- To assess the efficacy and toxicity of stereotactic radiosurgery for treating cranial base chordoma and chondrosarcoma.
- To evaluate tumor control rates and treatment-related complications.
Main Methods:
- Retrospective review of 29 patients with cranial base chordoma or chondrosarcoma treated with stereotactic radiosurgery.
- Analysis of tumor control, clinical outcomes, and radiation-related complications.
- Median follow-up of 4.8 years.
Main Results:
- Actuarial tumor control rates at 2 and 5 years were 89% and 32%, respectively.
- 28% of chordoma patients experienced tumor progression; chondrosarcoma patients had complete tumor control.
- 34% of patients developed radiation-related complications, including cranial nerve deficits and radiation necrosis.
Conclusions:
- Stereotactic radiosurgery can achieve in-field tumor control for select patients with cranial base chordomas and chondrosarcomas.
- High rates of radiation-related complications necessitate careful consideration, especially when combined with fractionated radiation therapy.
- Radiosurgery as an adjunct to surgery shows potential but requires further investigation regarding toxicity.