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Thrombosis of the superior mesenteric vein is quite rare, but a significant cause of mesenteric ischemia and can be fatal. It is estimated that 10–15% of mesenteric ischemia is due to mesenteric thrombosis. [3]
Superior mesenteric artery (SMA) syndrome is a gastro-vascular disorder in which the third and final portion of the duodenum is compressed between the abdominal aorta (AA) and the overlying superior mesenteric artery. This rare, potentially life-threatening syndrome is typically caused by an angle of 6–25° between the AA and the SMA, in ...
In embolic acute intestinal ischemia, CT-Angiography can be of great value for diagnosis and treatment. It may reveal the emboli itself lodged in the superior mesenteric artery, as well as the presence or absence of distal mesenteric branches. [18] Late findings, which indicate dead bowel, include: Intramural bowel gas [29] Portal venous gas
Thrombosis of the hepatic portal system, also known as splanchnic venous thrombosis: Thrombosis of the superior mesenteric vein, which may cause mesenteric ischemia (insufficient blood flow to the intestine) Portal vein thrombosis; Thrombosis of the splenic vein; Renal vein thrombosis (thrombosis of the veins of the kidneys) Ovarian vein ...
The main portal vein is formed by the union of the splenic vein and superior mesenteric vein (SMV). It is responsible for approximately three-fourths of the liver’s blood flow, transported from much of the gastrointestinal system as well as the pancreas, gallbladder, and spleen. [3]
The superior mesenteric vessels are composed of the superior mesenteric artery and the superior mesenteric vein.. In human anatomy, the superior mesenteric artery arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
Thrombosis of the superior mesenteric vein can cause mesenteric ischemia also known as ischemic bowel. Mesenteric ischemia can also result from the formation of a volvulus, a twisted loop of the small intestine that when it wraps around itself and also encloses the mesentery too tightly can cause ischemia. [13]
In an H-shunt, which could be mesocaval (from the superior mesenteric vein to the inferior vena cava) or could be, portocaval (from the portal vein to the inferior vena cava) a graft, either synthetic or the preferred vein harvested from elsewhere on the patient's body, is connected between the superior mesenteric vein and the inferior vena ...