title: Extrahepatic arteries of the human liver - anatomical variants and surgical relevancies.
abstract: The purpose of our study was to investigate the anatomical variations of the extrahepatic arterial structures of the liver with particular attention to rare variations and their potential impact on liver surgery. A total of 50 human abdominal organ complexes were used to prepare corrosion casts. A multicomponent resin mixture was injected into the abdominal aorta. The portal vein was injected with a different colored resin in 16 cases. Digestion of soft tissues was achieved using cc. KOH solution at 60-65 °C. Extrahepatic arterial variations were classified according to Michels. All specimens underwent 3D volumetric CT reconstruction. Normal anatomy was seen in 42% of cases, and variants were seen in the other 58%. No Michels type VI or X variations were present; however, in 18% of cases the extrahepatic arterial anatomy did not fit into Michels' classification. We report four new extrahepatic arterial variations. In contrast to the available data, normal anatomy was found much less frequently, whereas the prevalence of unclassified arterial variations was higher. We detected four previously unknown variations. Our data may contribute to the reduction of complications during surgical and radiological interventions in the upper abdomen.
authors.affiliation: Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary.
authors.forename: Károly
authors.initials: K
authors.lastname: Németh
authors.affiliation: Department of Hepatobiliary Surgery, Manchester Royal Infirmary, Manchester, UK.
authors.forename: Rahul
authors.initials: R
authors.lastname: Deshpande
authors.affiliation: Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary.
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Máthé
authors.affiliation: Department of Human Morphology and Developmental Biology, Semmelweis University, Budapest, Hungary.
authors.forename: András
authors.initials: A
authors.lastname: Szuák
authors.affiliation: Department of Human Morphology and Developmental Biology, Semmelweis University, Budapest, Hungary.
authors.forename: Mátyás
authors.initials: M
authors.lastname: Kiss
authors.affiliation: Department of Radiology and Oncotherapy, Semmelweis University, Budapest, Hungary.
authors.forename: Csaba
authors.initials: C
authors.lastname: Korom
authors.affiliation: Department of Human Morphology and Developmental Biology, Semmelweis University, Budapest, Hungary.
authors.forename: Ágnes
authors.initials: Á
authors.lastname: Nemeskéri
authors.affiliation: Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary.
authors.forename: László
authors.initials: L
authors.lastname: Kóbori
mesh_terms: D000792:Angiography; D001012:Aorta, Abdominal / Q000033:anatomy & histology; D001158:Arteries / Q000002:abnormalities*; D002965:Classification; D000013:Congenital Abnormalities / Q000453:epidemiology; D016319:Corrosion Casting; D006499:Hepatic Artery / Q000002:abnormalities / Q000000981:diagnostic imaging; D006801:Humans; D021621:Imaging, Three-Dimensional; D008099:Liver / Q000098:blood supply* / Q000601:surgery; D017538:Mesenteric Artery, Superior / Q000002:abnormalities / Q000000981:diagnostic imaging; D011169:Portal Vein / Q000033:anatomy & histology; D015995:Prevalence; D014057:Tomography, X-Ray Computed
keywords: anatomy; hepatic artery; liver graft; liver transplantation; variation