How do you treat localized esophageal carcinoma in patients who are unwilling or unable to undergo chemotherapy or surgery?

This is a question that comes up occasionally in clinic. My viewpoint is generally based on the prospective data that we have. Of course, the RTOG 85-01 study showed 0% long-term OS with definitive RT vs CRT. Additionally, the Intergroup 0123 study showed no evidence of improvement with higher dose...