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Fig. 2B. —57-year-old woman with postoperative change to pancreatic
head. Drawing shows right-to-left direction of blood flow. Because confluence
of superior mesenteric vein with portal vein is obstructed, blood flow of
superior mesenteric vein runs into middle colic vein (M), marginal vein along
transverse colon, left transverse colic vein, inferior mesenteric vein, then
splenic vein. X indicates location of venous obstruction and arrows indicate
direction of blood flow. IMV = inferior mesenteric vein, LTCV = left
transverse colic vein, MV = marginal vein along transverse colon.
