This case illustrates T4 pancreatic cancer. The vascular criteria for unresectability vary from country to country and surgeon to surgeon, but generally it is accepted that SMA with tumor encasement >180 degrees circumference (which this case has, with associated narrowing) is unresectable.  A coronal would probably be better to demonstrate it. The portal vein at the origin is very narrow... combined with the SMA involvement would make it unresectable.