Abstract
Background: Portomesenteric occlusions result from tumor compression, invasion or tumor thrombus extending through the portal and/or superior mesenteric vein (PV/SMV), often leading to cavernous transformation and portomesenteric hypertension. Portomesenteric hypertension is associated with an extremely high risk of variceal bleeding that often can preclude surgery. Mesocaval shunting can decompress the portomesenteric varices, necessitating safe pancreatic dissection and resection.
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