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Box plots of distances between pancreatic cancers and pathologically evaluated vessels. Box plots of the distances from the evaluated major veins (A) and major arteries (B) to pancreatic cancers in cases of type 2 and type 3 endoscopic ultrasonography (EUS) findings with no vascular invasion. The distances of the cases with type 2 EUS finding were significantly shorter than those of cases with type 3 EUS finding in both, the veins and arteries.
