2019年3月21日 · The portal vein (PV) is the main vessel of the portal venous system (PVS), which drains the blood from the gastrointestinal tract, gallbladder, pancreas, and spleen to the liver. There are several variants affecting the PV, and quite a number of congenital and acquired pathologies.In this pictorial …

2024年4月25日 · The main branches of the left portal vein originate from the umbilical portion, and supply liver segments 2, 3 and 4 5. The portal vein ramifies further, forming smaller venous branches and ultimately portal venules. Each portal venule courses alongside a hepatic arteriole and the two vessels form the vascular components of the portal triad.

In this pictorial review, we assess the embryological development and normal anatomy of the PVS, displaying selected cases consisting of normal variants, congenital anomalies, and a large and heterogeneous group of acquired conditions that may affect the PV.

The endosonographic image from the duodenal bulb shows the normal anatomy of the main portal vein at its formation. The superior mesenteric vein is seen merging with the splenic vein to form the portal vein. Dilated common bile duct is seen lying in front of the portal vein, and the left gastric vein is also seen joining the portal vein. Figure 12.

2022年6月24日 · Results: We identified 12 variants of the portal venous bed, representing different unions of the splenic vein, superior mesenteric vein, and inferior mesenteric vein. Thomson classification of the end of 19th century refers to the three most frequent variants, with type I as predominant (M=47%), followed by type III (M=27.8%) and type II (M=18 ...

2023年10月19日 · The imaging appearances of portal vein abnormalities discussed in this review include (a) occlusion from and differentiation between bland thrombus and tumor in vein and the changes associated with resultant hepatic artery buffer response changes, cavernous transformation of the portal vein, and portal biliopathy; (b) ascending thrombophlebitis ...

Awareness of congenital variants of portal venous system among radiologists should allow a more confident diagnosis and permit an accurate planning of surgical procedures and percutaneous interventions; identification of portal system anomalies also suggest an accurate evaluation of associated hepatic parenchymal anomalies such as nodular ...

2023年7月26日 · Portal vein. The portal vein is the most important vein in the portal venous system; it starts its formation close to the level of the second lumbar vertebrae (L2) and it is located in front (anterior) of the inferior vena cava and at the back (posterior) of the neck of the pancreas. It is about 8cm long.

2019年3月21日 · In this pictorial review, we assess the embryological development and normal anatomy of the PVS, displaying selected cases consisting of normal variants, congenital anomalies, and a large and heterogeneous group of acquired conditions that may affect the PV.

2024年7月4日 · By restoring the three-dimensional (3D) structure of the PV and the liver contour, the 3D visualization technique (3DVT) can track the branches and course of the main portal vein (MPV), left portal vein (LPV), right portal vein (RPV), right anterior portal vein (RAPV) and right posterior portal vein (RPPV) based on CT data [3,4,5]. The present ...