76-year-old woman with oligometastatic lung adenocarcinoma, s/p primary lung tumor treated with SBRT several years ago, subsequently developed biopsy-proven metastatic disease now with two adjacent sclerotic bony lesions in the right ilium, associated with pain.
Rx: The patient was treated with definitive radiation using SBRT, delivered by three volumetrically modulated arcs.
Though this patient was treated with single fraction SBRT, there is considerable variability in dosing schemes in clinical practice, with minimal data to guide selection of a particular regimen (Nguyen PRO 2020). Reasonable options include:
Sim/Planning:
Case contributed by Mayo Clinic Rochester
Contours per Nguyen IJROBP 2022:
OAR’s:
Dose Constraints (per TG101):
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