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Gamma knife surgery in acoustic tumours
Acta Neurochirurgica. Supplementum
|January 1, 1993
Summary
Gamma knife radiosurgery offers an effective treatment for acoustic neuromas, with significant tumor shrinkage and hearing preservation. This minimally invasive approach provides a safe alternative to microsurgery, allowing for a quick return to daily activities.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Neurology
Background:
- Acoustic neuromas are benign tumors arising from the vestibulocochlear nerve.
- Traditional treatment involves microsurgery, which carries risks of infection, bleeding, and cerebrospinal fluid leaks.
- Gamma knife radiosurgery presents a less invasive therapeutic option.
Purpose of the Study:
- To evaluate the long-term efficacy and safety of Gamma knife radiosurgery for treating acoustic neuromas.
- To compare outcomes with those of traditional microsurgical interventions.
Main Methods:
- Retrospective analysis of 254 acoustic neuroma cases treated between 1969 and 1991.
- Minimum follow-up period of 12 months.
- Assessment of tumor size changes, contrast enhancement on CT/MRI, facial nerve function, trigeminal neuropathy, and hearing preservation.
Main Results:
- Early loss of contrast enhancement observed in 70% of cases.
- Tumor size reduction occurred in 55% of unilateral tumors and 33% of NF2-associated tumors.
- Facial weakness occurred in 17% but improved; trigeminal neuropathy in 19%; hearing preservation in 77%.
Conclusions:
- Gamma knife radiosurgery is an efficient and safe alternative to microsurgery for acoustic neuromas.
- It offers reduced risks, no hospitalization, and rapid recovery.
- Consideration as a primary treatment option for all acoustic neuroma patients is recommended.