This study states that During pancreatic head resection (Whipple procedure), the portal vein (PV) and mesenteric veins must often be resected or repaired. Grafts or patches for mesenteric venous reconstruction—homograft, internal jugular vein, or bovine pericardium—can take time to thaw or to be harvested. Therefore, temporary procedural shunting of the mesenteric venous circulation during reconstruction can mitigate bowel edema and ischemia resulting from procedural venous occlusion. Patient health information was harvested retrospectively from a prospectively maintained database. Data were summarized using standard statistical techniques. Twenty-one patients, 12 women and 9 men, underwent temporary PV shunting during oncologic resection and PV reconstruction from 2010 to 2020. Average age was 64 years. All patients had either pancreatic cancer (95%) or cholangiocarcinoma (5%) and underwent Whipple procedure (81%) or pancreatectomy and splenectomy (19%). Reconstructions consisted of interposition grafting (52% cadaveric aortic homograft and 5% internal jugular vein) or patch angioplasty (38% bovine pericardium and 5% internal jugular vein). No. 12 and No. 14 Argyle shunts were used. In all but two patients, the shunt was easily placed into the superior mesenteric vein (SMV) caudally and the PV cranially.