In patients with newly diagnosed cervical esophageal cancer with limited metastatic disease, do you treat the primary with chemoradiation?

As systemic therapies for GI cancers have become more effective we are being asked to consider consolidative radiation.  In general, radiation in this setting is for palliation only.  However, in selected patients with limited M1 disease who have a durable response to systemic chemotherapy and the only site of PET+ disease is in the esophagus it would be reasonable to consolidate with chemoRT.  This is not standard of care and there are no published data in this setting - it is a clinical decision.