Abstract
e15795 Background: Surgery remains the only curative treatment option in pancreatic adenocarcinoma, yet in more than 50% of the patients (pts) the disease is too advanced or at very high risk and considered inoperable. They are either managed with no treatment or other nonsurgical methods. Hence, we analyzed a large cohort of pancreatic adenocarcinoma pts undergoing No Treatment vs Chemotherapy, Radiation or Chemoradiation to determine their impact on survival. Methods: Only pancreatic adenocarcinoma pts who had no surgery in the National Cancer Database (NCDB) from 2004–2014 were included. Of that group, patients with unknown or missing data about chemotherapy or radiation treatment or less than 3 years of survival data were excluded. Pts were stratified into 4 groups: Chemotherapy, Radiation Therapy, Chemoradiation and No Treatment. Overall 1-, 2- and 3-year survival was calculated and the groups were compared using Pearson’s chi-squared. Results: Of the total 309,709 pancreatic cancer pts in the NCDB 2004–2014, 111,421 (36.0%) remained after application of the study criteria. Of these, 43,203 (38.8%) received chemotherapy only, 2,453 (2.2%) received radiation only, 15,764 (14.1%) received chemoradiation and 50,001 (40.0%) had no treatment. Overall survival for 1, 2, and 3 years was best in the chemoradiation group with a 1 year survival of (40.0%) compared to chemotherapy only (22.4%), radiation only (14.9%) and no treatment (9.6%). Overall, only (19.0%) of pts survived for 1 year, (5.4%) survived for 2 years and (2.3%) survived for 3 years. (Table) Conclusions: Survival in pancreatic adenocarcinoma pts remains dismal without surgery. Best survival in nonsurgical pts was seen after combination Chemoradiation therapy and worst survival in No Treatment group. Hence, whenever possible, a combination Chemoradiation should be offered even as palliation in non-surgical pancreatic adenocarcinoma pts.[Table: see text]
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