Proposal for a reclassification of liver based anatomy on portal ramifications - 18/08/11
, Shinichi Okazumi, M.D. a, Yukimasa Miyazawa, M.D. a, Harufumi Makino, M.D. a, Fumihiko Miura, M.D. a, Gaku Ohira, M.D. a, Yushin Yoshinaga, M.D. a, Takayuki Tohma, M.D. a, Hidehiro Kudo, M.D. a, Katsuhiko Matsubara, M.D. a, Munemasa Ryu, M.D. b, Takenori Ochiai, M.D., Ph.D. a : F.A.C.S.Abstract |
Background |
Portal branching patterns that differ from those previously described are occasionally encountered during liver surgery.
Methods |
A total of 60 patients with normal intrahepatic venous anatomy underwent helical computed tomography during arterial portography (CTAP). Next, 3 dimensional portograms were reconstructed to verify the locations of the portal veins. Portal branching patterns in the right hemiliver were assessed.
Results |
In all 60 patients examined, the right anterior portal vein bifurcated into the ventral and dorsal branches. In 42 (70%) of 60 patients, some branches arose from the right posterior portal trunk. Between 1 and 3 branches (mean 2.3 branches per patient) coursed cranially, between 2 and 5 branches (mean 3.2 branches per patient) coursed caudally, and between 1 and 2 branches (mean 1.3 branches per patient) coursed laterally.
Conclusions |
We propose that the right liver should be divided into 3 segments, which are designated as the right anterior, middle, and posterior segments.
Le texte complet de cet article est disponible en PDF.Keywords : Portal ramification, Segmental anatomy, Right anterior segment, Right middle segment, Right posterior segment
Plan
Vol 189 - N° 2
P. 195-199 - février 2005 Retour au numéro
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