What is your planning approach for SBRT when the tumor abuts the great vessels such as aortic arch or SVC?

Do you modify your volumes? What dose constraints do you use? How would you determine your dose/fraction regimen?

Answer from: Radiation Oncologist at Academic Institution

I think there are several reasonable approaches here. The first part is whether this is curative intent (early stage) vs non-curative but for local control (i.e. oligometastastic/oligoprogression). I lean towards being more aggressive in the curative intent setting while trying to be a little more c...

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Radiation Oncologist at University of Pennsylvania Health System
Good question! I have not yet seen a complication ...

Radiation Oncologist at Montefiore Einstein Comprehensive Cancer Center
For larger tumors, I often prescribe 12 Gy x 5 but...

Answer from: Radiation Oncologist at Community Practice

I agree with @Dr. Bradley above. 10Gy x 5, but am not running the center of the lesion much hotter, instead keeping the whole ptv and gtv less than 105% or so.

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What is your planning approach for SBRT when the tumor abuts the great vessels such as aortic arch or SVC?

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