Vestibular Schwannoma
Conditions
Keywords
Stereotactic radiotherapy, SRS, SRT, vestibular schwannoma
Brief summary
The purpose of this study is to determine whether stereotactic radiosurgery (SRS)and stereotactic radiotherapy (SRT)are effective in the treatment of vestibular schwannoma (VS).
Detailed description
Vestibular schwannomas (VSs) are slow-growing tumors of the myelin-forming cells that cover cranial nerve VIII.The treatment options for patients with VSs include active observation, surgical management, and radiotherapy. However, the optimal treatment choice remain controversial. Over the past 10 years, there has been rapid progress in the application of stereotactic radiotherapy to the treatment of VSs. The stereotactic radiotherapy program includes single fraction radiosurgery (SRS) and hypofraction stereotactic radiotherapy (HSRT) are commonly used for VSs treatment. Since SRS and SRT techniques differ significantly enough to raise questions of therapeutic advantage and until now, there is no prospective, randomized study comparing the outcomes for patients treated using both radiotherapy techniques. We designed the first prospective randomized protocol to compare SRS and SRT for answer this question.
Interventions
Stereotactic radiotherapy, hypofraction using 18 Gray in 3 fractions
Radio surgery 12 Gy
Sponsors
Study design
Eligibility
Inclusion criteria
* vestibular schwannoma tumor size not more than 3 cm.
Exclusion criteria
* NF 2 patient * underlying cerebrovascular disease * tumor compress and efface brain stem ( Koos 4)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| audiogram | two year | change from baseline audiogram at 6 months,1 year and 2 year |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| number of participant with adverse event | 2 year | the new number of adverse event after radiation at 6 month,1 and 2 year |
| tumor size | 2 year | change in tumor size at 6 month, 1 year and 2 year |