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[Stereotactic radiosurgery in acoustic neurinomas]
1Department of Neurosurgery, Karolinska Hospital Stockholm, Sweden.
No Shinkei Geka. Neurological Surgery
|December 1, 1990
Summary
Stereotactic radiosurgery effectively treated acoustic neurinomas in 88% of patients, preserving nerve function and minimizing hospitalization. Small tumors showed better response rates.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Oncology
Background:
- Acoustic neurinomas are benign tumors requiring effective treatment.
- Stereotactic radiosurgery (SRS) offers a minimally invasive therapeutic option.
Observation:
- A review of 57 patients (61 tumors) treated with SRS between 1982-1984 was conducted.
- Tumor response was assessed via CT/MRI, with follow-up ranging from 6-66 months.
- Clinical and radiological data were analyzed for treatment efficacy and side effects.
Findings:
- SRS resulted in tumor size decrease or stabilization in 88% of cases.
- Smaller tumors (<15 mm diameter) demonstrated higher response rates (93%) compared to larger ones (85%).
- Facial and trigeminal nerve dysfunction occurred transiently in 9% of patients, with onset 4-15 months post-treatment.
Implications:
- Stereotactic radiosurgery is an efficient method for controlling acoustic neurinoma growth.
- SRS demonstrates a favorable safety profile, preserving cranial nerve function.
- The procedure offers significant patient benefits, including reduced hospitalization and effective tumor management.