“Mesenteric venous thrombosis is caused by impairment of venous return of the bowel due to local blood coagulation. Primary mesenteric venous thrombosis is considered spontaneous and idiopathic, whereas secondary mesenteric venous thrombosis is due to an underlying condition. Mesenteric venous thrombosis can lead to venous engorgement and mesenteric ischemia and accounts for 5 to 15 percent of mesenteric ischemic events.”