Intrahepatic vascular division in the pig: basis for partial hepatectomies
R. Camprodon, J. Solsona, J. A. Guerrero, C. G. Mendoza, J. Segura and J. M. Fabregat
Transplantation of resected hepatic fragments, with the attendant vascular
and biliary tract reconstruction, presents difficulties. We have studied
the intraparenchymal vascular division in the pig with a view to performing
partial hepatectomies with the greastest possible anatomical support.
Forty-six molds of the various vascular territories were obtained from the
31 porcine livers. Each segment of the median lobe is dependent on the
adjacent lateral lobe. Its intersegmental fissure is the obligatory site
for parenchymal section to be continued through horizontal portion of
portal vein, hepatic artery, and left hepatic duct. A right hemihepatectomy
unfailingly results in the devitalization of the left side of the liver. If
the goal of a hepatectomy is the transplantation of the resected fragment,
it is recommended that the right side of the liver be utilized, as its more
convenient extrahepatic vascular and biliary calibre will permit pedicular
conservation and anastomosis.
