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Fig. 8 —72-year-old man with unresectable pancreatic cancer. Invasion of transverse mesocolon signals unresectability. Coronal reformation image shows barely visible tumor abutting superior mesenteric vein over 1.5-cm segment (double arrow). This finding per se was not considered contraindication to pancreaticoduodenectomy. However, there was soft tissue in transverse mesocolon (arrowhead), which was suspected to be invasive cancer and proven on subsequent diagnostic laparoscopy. Patient did not have curative resection. Tumor is closely abutting and probably invades third part of duodenum (white arrow). Duodenal invasion does not preclude pancreaticoduodenectomy because almost all of duodenum is removed at surgery.