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A 64-year-old woman with hepatocellular carcinoma underwent gastroduodenal artery embolization before hepatic radioembolization. (a) A common hepatic angiogram shows displacement of the last coil (arrow) into the common hepatic artery, resulting in spasm and mechanical obstruction. (b) A digital subtraction angiogram shows successful exclusion of the displaced coil by a 5-mm-diameter covered endograft (arrow).
