How do you treat duodenal adenocarcinoma when using primary chemoradiation therapy?

We treat them the same as rectal cancer. Induction FOLFOX, followed by 50.4Gy in 28 with concurrent capecitabine. The responsiveness to these therapies is about the same, including cCR rate of 30% and ultimate LC without surgery 20%. There is no role for PET, we use CT CAP with contrast. The tumor +...