For a patient with remote history of mantle field radiation for early stage Hodgkin's lymphoma, now with oligometastatic breast cancer, would you offer SBRT to chest wall metastasis?   

In the setting of previous radiation (mantle, previous breast RT, etc), it's important to see what the total dose was and how long since that radiation was delivered.  In terms of oligometastatic disease with chest wall metastasis, is this de novo or following initial treatment? If de novo, we...