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Your portal vein begins just behind the neck of your pancreas and in front of your inferior vena cava. It extends to your porta hepatis (liver hilum). This is an opening in your liver that allows blood vessels and other structures to enter and leave your liver.
Once in the liver, PV ramifies and reaches the sinusoids, with downstream blood being directed to the central vein at the hepatic lobule level, then to the hepatic veins and inferior vena cava (IVC) to reach the systemic venous system.
Blood from the abdominal viscera travels into the portal vein and enters the IVC via the hepatic veins after traversing the liver and its sinusoids. Venous blood from the abdominal wall reaches the IVC through lumbar veins.
The veins of the stomach, spleen, pancreas, small and large intestines first empty into the hepatic portal vein. The hepatic portal vein carries this blood to the liver to be processed and detoxified. Then, the blood reaches the IVC through the hepatic veins.
The inferior vena cava (IVC) is the main conduit for venous return from the pelvis, abdominal viscera and lower extremities. A comprehensive understanding of IVC anatomy, congenital variants and pathology is instrumental to accurate diagnosis and management.
The portal vein is formed by the joining of the superior mesenteric vein and the splenic vein. It runs upwards and lies behind the bile duct and hepatic artery and it also lies anterior to the inferior vena cava.
The portal vein (PV) (sometimes referred to as the main or hepatic portal vein) is the main vessel in the portal venous system and drains blood from the gastrointestinal tract and spleen to the liver.
The inferior vena cava (also known as IVC or the posterior vena cava) is a large vein that carries blood from the torso and lower body to the right side of the heart. From there the blood is pumped to the lungs to get oxygen before going to the left side of the heart to be pumped back out to the body.
The inferior vena cava (IVC) (plural: inferior venae cavae) is one of the great vessels that drains venous blood from the lower limbs, pelvis and abdomen into the right atrium of the heart. Gross anatomy. The inferior vena cava is formed by the confluence of the two common iliac veins at the L5 vertebral level.
This patient's course provided some important clinical insights. Patients with IVC anomalies infrequently have a continuation of the IVC with the portal vein system. This shunt probably leads to portal hypertension via inflow from the IVC to the portal vein system in the long term.