title: Congenital anomalies of the portal venous system--CT appearances with embryological considerations.
abstract: The portal vein is formed by the union of the splenic and superior mesenteric veins behind the neck of the pancreas. This system is derived from the vitelline veins, a component of the extraembryonic venous system. In this paper we report three cases, each of which illustrates a congenital variant of the portal venous system, describe their computed tomography appearances and discuss the embryological processes accounting for these anomalies.
authors.affiliation: Department of Imaging, Derriford Hospital, Plymouth.
authors.forename: G
authors.initials: G
authors.lastname: Walsh
authors.forename: M P
authors.initials: MP
authors.lastname: Williams
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D017538:Mesenteric Artery, Superior / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000196:embryology; D011168:Portal System / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology; D014057:Tomography, X-Ray Computed; D014102:Torsion Abnormality