Portal vein obstruction results from thrombosis (blood clot) or narrowing of the portal vein, which brings blood to the liver from the intestines.
Because the portal vein is narrowed or blocked, pressure in the portal vein increases. This increased pressure (called portal hypertension) causes the spleen to enlarge (splenomegaly). It also results in dilated, twisted (varicose) veins in the esophagus (esophageal varices) and often in the stomach (portal hypertensive gastropathy).
Doppler Ultrasonography usually confirms the diagnosis. It shows that blood flow through the portal vein is reduced or absent.
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— with Ben Johnson, Shelley Young, Robert Young, Robert O Young and Ph Miracle.
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