title: Tc-99m RBC blood-pool imaging demonstrates umbilical vein in portosystemic shunt.
abstract: Dynamic hepatic scintigraphy in a patient with longstanding ethanolism revealed hepatofugal drainage of the liver area. That this pathway represented the umbilical vein was shown by subsequent blood-pool images. The umbilical vein drained the left portal vein into venous channels in or near the anterior abdominal wall. These channels proceeded through epigastric vessels into the right femoral/iliac venous system. The umbilical vein may serve as a shunt from the portal system to the systemic circulation in cases of portal hypertension. Blood-pool imaging has a potential role in clarifying possible venous channels identified by hepatic scintiangiography, and can suggest the presence of portal hypertension when these vessels are visualized.
mesh_terms: D000328:Adult; D000437:Alcoholism / Q000150:complications; D003097:Collateral Circulation; D004912:Erythrocytes; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013667:Technetium; D014471:Umbilical Veins / Q000000981:diagnostic imaging*
chemical_list: D013667:Technetium