title: Portal vein absence and nodular regenerative hyperplasia of the liver with giant inferior mesenteric vein.
abstract: We present a patient with nodular regenerative hyperplasia of the liver (NRH) and portal vein absence studied with CT, MR imaging, and MR angiography. The most striking feature was exuberant hemorrhoids due to a giant hepatofugal inferior mesenteric vein. A relationship between unbalanced portal blood flow and nodular regenerative transformation of the liver is suggested in this patient.
authors.affiliation: Department of Radiology, Hospital La Fe, Av. Campanar, 21, 46009 Valencia, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Arana
authors.forename: L
authors.initials: L
authors.lastname: Martí-Bonmatí
authors.forename: V
authors.initials: V
authors.lastname: Martínez
authors.forename: M
authors.initials: M
authors.lastname: Hoyos
authors.forename: H
authors.initials: H
authors.lastname: Montes
mesh_terms: D000293:Adolescent; D001706:Biopsy; D006484:Hemorrhoids / Q000209:etiology; D006801:Humans; D006965:Hyperplasia / Q000000981:diagnostic imaging / Q000473:pathology; D008099:Liver / Q000000981:diagnostic imaging / Q000473:pathology*; D008115:Liver Regeneration; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008642:Mesenteric Veins / Q000473:pathology*; D011169:Portal Vein / Q000002:abnormalities*; D014057:Tomography, X-Ray Computed