Conjoined right hepatic artery from branches of the common hepatic and gastroduodenal arteries: a rare anatomic variant.

Purpose: To describe a previously unreported anatomical variant of the hepatic arterial supply: a conjoined right hepatic artery, formed by branches of the common hepatic artery and gastroduodenal artery.

Method: A 54-year-old female with oligometastatic colorectal cancer with metastases to the liver presented for planning stage arteriography in preparation for Y90 radioembolization.

Results: Arteriography of the common hepatic artery demonstrated bifurcation into a right hepatic artery and gastroduodenal artery.