Mesenteric venous thrombosis associated with protein C deficiency

An 83-year-old man had gradually worsening abdominal pain and vomiting. Lap arotomy revealed segmental intestinal infarction resulting from thrombosis in the superior mesenteric vein. Necrosed intestine was resected and anasto mosis was performed successfully. The patient was anticoagulated with intra venous heparin and nafamostat mesilate followed by oral aspirin. He recover ed rapidly. Blood chemistry revealed protein C deficiency, while protein S and antithrombin III levels were normal. Laboratory evaluation of these pro teins may help define the cause of mesenteric venous thrombosis.