Standard adj RT volume includes tumor bed, anastomoses (pancreaticojejunostomy and choledochojejunostomy), and LN basin (peripancreatic, celiac, sup mesenteric artery, porta hepatis, and aortocaval). The initial volume is treated to 45 Gy in 1.8 Gy/fx with a cone down to 50.4-54 Gy to the surgical bed depending on extent of resection. Keep max small bowel dose <51 Gy.