Would you treat an enlarging metastasis of the brainstem/upper cervical spinal cord with SRS in the setting of widespread disease and prior WBRT?

From what I understand, this is a patient with extensive-stage SCLC and widespread intracranial disease (>40 brain metastases), previously treated with WBRT (presumably 30 Gy in 10 fractions?), now presenting with a symptomatic (~2–3 cm) enlarging lesion at the brainstem/upper cervical spinal cord j...