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Topics:
Radiation Oncology • Neuro-Oncology
How do you approach treatment of an optic nerve sheath meningioma?
What dose/fractionation do you prefer? What is the maximum dose that you will allow to the optic nerve and chiasm?
Answer from: Radiation Oncologist at Academic Institution
We have been treating optic nerve sheet meningiomas (ONSM) at Jefferson for over two decades with SRT technique, delivering a dose of 5400 cGy in 180 cGy daily fractions, unless the tumor has a significant posterior extension toward the anterior clinoid/chiasm, in which case a lower dose of 5040-522...
Answer from: Radiation Oncologist at Academic Institution
No biopsy. I keep the dose to 5040/180 cGy due to already compromised ON. No hot spots over optics. Guy on treatment now already getting vision back.
Answer from: Radiation Oncologist at Academic Institution
50.4 at 1.8 Gy per fraction with protons.
Answer from: at Community Practice
Interesting perspectives. Do we have data on long term vision loss post Radiation? As a Neuro-Ophthalmologist I see a considerable number of such cases.
Thank you very much, Sri.
I agree. In fact many patients could have objectiv...
Radiation therapy is superior to surgery, particul...
Agree with all the above. Dr Sanghvi's dosimetric ...
For optic chiasm meningiomas I typically use 48.6G...
Agree with these principles. Once the nerve has be...
I typically go to 50.4 Gy in 28 fractions and limi...