The "H graft" in portacaval shunts.
D001807:Blood Vessel Prosthesis; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D011167:Portacaval Shunt, Surgical; D012501:Saphenous Vein / Q000637:transplantation; D014182:Transplantation, Autologous; D014682:Vena Cava, Inferior / Q000637:transplantation