Abstract
ABSTRACT Introduction Intrahepatic cholangiocarcinoma (ICC) is the 2nd most common primary liver malignancy. For nonsurgical candidates, the primary treatment option is systemic chemotherapy, which can be combined with locoregional therapies to enhance local control. Common intra-arterial locoregional therapies include transarterial hepatic embolization, conventional transarterial chemoembolization, drug-eluting bead transarterial chemoembolization, transarterial radioembolization with Yttrium-90 microspheres, and hepatic artery infusion. This article aims to review the latest literature on intra-arterial locoregional therapies for treating ICC. Areas covered A literature search was conducted on PubMed using keywords: intrahepatic cholangiocarcinoma, intra-arterial locoregional therapy, embolization, chemoembolization, radioembolization, hepatic artery infusion, and immunotherapy. Articles from 2008 to 2024 were reviewed. Survival data from retrospective and prospective studies, meta-analyses, and clinical trials were evaluated. Expert opinion Although no level I evidence supports the superiority of any specific intra-arterial therapy, there has been a shift toward favoring radioembolization. In our expert opinion, radioembolization may offer superior outcomes when performed by skilled operators with meticulous planning and personalized dosimetry, particularly for radiation segmentectomy or treating lobar/bilobar disease in appropriate candidates.
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