Spleen-preserving distal pancreatectomy (SpDP) with conservation of the splenic artery and vein is performed for benign tumors or low-grade malignancies of the body and tail of the pancreas, or for chronic pancreatitis [].This method is already being used worldwide for the treatment of chronic pancreatitis [2, 3].We were the first to apply this procedure to chronic pancreatitis . It includes thrombosis in the . Early complication (within two weeks) includes gastric leakage, hemorrhage, and abscess and rarely as in our case splenic infarction and acute pancreatitis. . Splenic vein stenosis and thrombosis causes a localized form of portal hypertension known as left-sided hypertension and as a consequence, splenic vein stenosis and thrombosis may be complicated by the formation of varices, with the potential of massive upper gastrointestinal bleeding. The formation of prepancreatic portal vein by the union of superior mesenteric vein with the splenic vein which came anteriorly by piercing the body of pancreas to form the portal vein in front of the neck of pancreas is an exceptional occurrence which has never been reported in world literature so far. The splenic vein, here called the "lienal vein", travels from the spleen, above the pancreas, and ends in the portal vein. Acute PVT, which is the sudden formation of a . The main function of this blood vessel is to drain the venous blood from the spleen. The splenic vein and superior mesenteric vein (SMV) join to form the main portal vein . Splenic vein thrombosis is found in up to 35% of such patients. In human anatomy, the splenic vein (formerly the lienal vein) is a blood vessel that drains blood from the spleen, the stomach fundus and part of the pancreas. Splenic vein thrombosis is a blood clot that is obstructing the splenic vein, which is located on the surface of the spleen. The portal venous system includes: right and left gastric, cystic, para-umbilical, splenic, inferior mesenteric (via a splenic vein), and superior mesenteric vein. What does splenic vein thrombosis mean? Branches of the right vitelline veins around the duodenum develop into the central portal veins. Immediately dorsal to the neck, the splenic vein joins with the superior mesenteric vein to form the portal vein. Almost any vein in the abdomen may serve as a potential collateral channel to the systemic circulation. Splenic Vein Thrombosis. The splenic vein merges with the superior mesenteric vein . Why does splenic vein thrombosis cause portal hypertension? Splenic vein thrombosis (SVT) is a condition that is largely precipitated by both the acute and chronic forms of pancreatitis [1] [2]. Development. The mechanism for formation of the thrombus is likely complex with both intrinsic endothelial factors due to inflammatory or neoplastic processes . The spleen provides a critical function to the body. the splenic vein and superior mesenteric vein appeared to enter the liver separately and joined to form a small main portal vein within the liver. It is part of the hepatic portal system . 110 In a recent study on alcoholic pancreatitis, . SVT includes PVT, MVT, splenic vein thrombosis, and the Budd-Chiari syndrome (BCS). Presence of abnormal collateral vessels appears to be one of the most sensitive (70-83%) and specific sonographic signs for the diagnosis of portal hypertension. 31,110 Acute pancreatitis and pancreatic pseudocysts have been found in 90% of patients with splenic vein thrombosis. Splenic vein. In addition to the spleen, it drains parts of the stomach, pancreas and the hindgut. The etiology or causes of splenic infarction include the following: . 1 When blood flow through a vessel or a vascular bed is obstructed due to occlusion, as in EHPVO, or distortion, as in liver . 1 The higher incidence of complications, including septic shock, abscess formation, and postembolization syndrome, made PSE less popular compared to transjugular . . The splenic vein is a large vessel located retroperitoneally in the upper part of the abdominal cavity. Moossa and Gadd reported [ 4 ] that among 144 cases of splenic vein thrombosis, 60% (87 cases) were caused by pancreatitis, and 9% (13 cases) were caused by malignant . It not only recycles iron, but it also stores, recycles, and produces red blood cells. Introduction. Splenic vein occlusion results in back pressure which is transmitted through its anastomoses with the short gastric and gastroepiploic veins and subsequently via the coronary vein into the portal system. Splenic vein. ic vein. Arises by the union of several small veins at the hilum on the anterior surface of the spleen with the short gastric and left gastroepiploic veins; passes backward through the splenorenal ligament to the left kidney, then runs behind the upper border of the pancreas to the neck of the pancreas, where it joins the superior . PDF | Bradypus variegatus, the common sloth, belongs to the Bradypodidae family, being considered a biological model to be applied in multidisciplinary. Pancreatitis is responsible for about 60% of cases of SVT, although the latter does not usually transpire during an acute attack, but rather after repeated insult.Patients with a history of pancreatitis have up to a 20% risk of developing SVT [3]. 5 The right umbilical vein involutes, and the left umbilical vein becomes the . Delayed complication (after two weeks) includes stricture formation, nutritional deficiency, GERD, and port site hernia formation. The splenic and superior mesenteric merge to form the portal vein. Partial splenic artery embolization (PSE) has been used for a wide range of indications, including the control of bleeding in blunt splenic injuries, portal hypertension complications, and hypersplenism due to various etiologies. Inflammation of the pancreas may lead to inflammation of the underlying splenic vein, leading to thrombus formation and other pathological sequelae (i.e., left-sided portal hypertension and gastric varices) [4-5]. The splenic vein lies posterior to and closely approximated to the body of the pancreas, and it runs from the pancreatic tail to the neck of the gland. The spleen's white pulp processes . Why does pancreatitis cause splenic vein thrombosis? The increased pressure in the splenic vein causes the spleen to enlarge, and other veins to dilate and twist in the esophagus and stomach; internal bleeding may occur. . . Splenic vein thrombosis (plural: thromboses) is an uncommon condition in which the splenic vein becomes thrombosed, that most frequently occurs in the context of pancreatitis or pancreatic cancer. 84 of whom received some form of anticoagulant therapy, the incidence of thrombotic events was 5.5/100 patient-years (95% CI, 3.8-7.2), and the incidence of any gastrointestinal bleeding was 12.5/100 patient-years (95% CI, 10-15). The liver bud develops between the pericardial cavity and the stalk of the primitive yolk sac. This results in reversal of flow in these veins and the formation of gastric varices. PV-1 was formed by the junction of the superior mesenteric vein (SMV) and the splenic vein (SV), anterior to the descending duodenal and pancreatic neck with no thickening or dilatation. 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