Erschienen in:
01.06.2003 | Laboratory Investigations
Anatomy of the Portal Vein Bifurcation: Implication for
Transjugular Intrahepatic Portal Systemic Shunts
verfasst von:
Philip Chong-hei Kwok, Wai Fu Ng, Christine Suk-yee Lam, Polly Po Tsui, Asma Faruqi
Erschienen in:
CardioVascular and Interventional Radiology
|
Ausgabe 3/2003
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Abstract
Purpose: The relationship of the portal
vein bifurcation to the liver capsule in Asians, which is an important
landmark for transjugular intrahepatic portosystemic shunt, has not
previously been described.
Methods: The anatomy of the
portal vein bifurcation was studied in 70 adult Chinese cadavers; it
was characterized as intrahepatic or extrahepatic. The length of the
exposed portion of the right and left portal veins was measured when
the bifurcation was extrahepatic.
Results: The portal
vein bifurcation was intrahepatic in 37 cadavers (53%) and
extrahepatic in 33 cadavers (47%). The mean length of the right and
left extrahepatic portal veins was 0.96 cm and 0.85 cm respectively.
Both were less than or equal to 2 cm in 94% of the cadavers with
extrahepatic bifurcation. There was no correlation between the presence
of cirrhosis and the location of the portal vein bifurcation
(p = 1.0). There was no statistically
significant difference in liver mass in cadavers with either
extrahepatic or intrahepatic bifurcation (p =
0.40).
Conclusions: These findings suggest that for
transjugular intrahepatic portosystemic shunt placement, a portal vein
puncture 2 cm from the bifurcation will be safe in most cases.