Intraductal tumor invasion of hepatocellular carcinoma (HCC) is considered rare. Transarterial chemoembolization (TACE) is effective for tumor thrombus of HCC in the bile duct. However, a few cases of obstructive jaundice caused by migration of a tumor fragment after TACE have recently been reported. The aim of this study was to identify factors that affect tumor migration after TACE. At this writing, a review of the medical literature disclosed seven reported cases of biliary obstruction caused by migration of a necrotic tumor cast after TACE. We, herein, report on an additional case of acute obstructive cholangitis complicated by migration of a necrotic tumor cast after TACE for intrabile duct invasion of HCC, in a 71-year-old man. The tumor cast in the common bile duct was removed successfully using a basket during ERCP and was pathologically confirmed to be a completely necrotic fragment of HCC. The patient's symptoms showed dramatic improvement. In summary, physicians should be aware of acute obstructive cholangitis complicated by tumor migration in a patient undergoing TACE. We suggest that an intrabile duct invasion would be a major predisposing factor of tumor migration after TACE and drainage procedures such as ERCP or percutaneous transbiliary drainage could be effective treatment modalities in these patients.
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| http://dx.doi.org/10.4166/kjg.2014.63.3.171 | DOI Listing |
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