Table 1. Medical College of Wisconsin LAPC Classification based on objective tumor-vessel relationships as seen on high quality cross-sectional imaging.
| Vessel | Tumor relationship | |
|---|---|---|
| Type A | Type B | |
| CA | >180° | >180° |
| No extension to the aorta Amenable to celiac resection | Abutment/encasement of the aorta | |
| SMA | >180° but ≤270° | > 270° |
| CHA | >180° | >180° |
| Extension to CA that is amenable to reconstruction | Extension to bifurcation of left and right hepatic arteries | |
| SMV/PV | Occlusion, but distal target >1.5x SMA diameter | Occlusion without obvious option for venous reconstruction |
| GDA & LGA | Only one vessel involved | Both vessels involved |
| Technical option for surgical resection as assessed at the time of diagnosis | Yes | No |
LAPC, locally advanced pancreatic cancer; CA, celiac axis; SMA, superior mesenteric artery; CHA, common hepatic artery; SMV, superior mesenteric vein; PV, portal vein; GDA, gastroduodenal artery; LGA, left gastric artery.