James Cantlie's early messages for hepatic surgeons: how the concept of pre-operative portal vein occlusion was defined

In 1897, James Cantlie from Scotland published his findings of an autopsy on a patient in which the right side of the liver was atrophied whereas the left side of the liver showed a marked hypertrophy. He noted the hepatic vessels to the atrophied side to be obliterated. From this observation, he drew two important conclusions. First, that the transition of the atrophied part to the hypertrophied part defined the anatomical mid-line of the liver, according to the portal division of blood supply to the liver. This line we now know as Cantlie's line which he described connecting the fundus of the gallbladder with the centre of the inferior vena cava. Second, he foresaw that the potential of one half of the liver to hypertrophy when the other half is deprived of its blood supply, could be used to the advantage of hepatic resection. It would take another 85 years, however, before the first clinical, pre-operative portal vein embolization was carried out in Japan in 1982