Arterial Collaterals in Intrahepatic Arterial Occlusion

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Abstract
Two cases are reported, where intrahepatic peripheral arterial collaterals were angiographically observed. In one case the collateral artery connected the subsegmental arteries of the dorso-caudal and ventro-cranial segments; in the other collateral circulation existed between the ventro-cranial segmental artery and the middle hepatic artery. Thus, the segmental arteries of the liver are not always end arteries. A schematic drawing of the hitherto angiographically confirmed collaterals is given.