We choose those patients who had underwent the R0 resection of pancreatic ductal adenocarcinoma patients, and divided them into two groups randomly, one group patients were given gemcitabine only according the current guidelines, while the other group patients were given gemcitabine combined with the anti-inflammation agent Celecoxib. The disease free survivals, drugs related side effects, overall survivals and other endpoints events were recorded and analyzed, to assess the celecoxib could or couldn't synergist the gemcitabine anti tumor effect on R0 resection pancreatic cancer patients.
