How would you manage asymptomatic radiation necrosis seen on MRI after SRS of a benign tumor?

About half the time, the MRI findings resolve or stabalize over time. We repeat the MRI every 6-12 weeks depending on how concerning the MRI findings are, stability, degree of edema, location of radionecrosis, etc.. If the patient becomes symptomatic, we start steroids and refer to a neurosurgeon ex...

Asymptomatic necrosis could be observed with serial MRI imaging -- DCE MRI might be useful. Also how sure are you that the treated lesion was benign?