title: Preduodenal portal vein: venography, ultrasonography, and review of the literature.
mesh_terms: D000293:Adolescent; D004386:Duodenum; D006801:Humans; D008297:Male; D010690:Phlebography; D011169:Portal Vein / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011707:Pyloric Stenosis / Q000601:surgery; D014463:Ultrasonography