(A) Overall survival, National Cancer Database (NCDB) 2004–2014. (B) Overall survival, Surveillance, Epidemiology, and End Results (SEER) 2004–2014. (C) Survival by treatment modality comparing no treatment, surgery only and surgery plus radiation, NCDB 2004–2014. (D) Survival by treatment modality comparing no treatment, surgery only and surgery plus radiation, SEER 2004–2014.