Abstract
Lipiodol accumulation patterns were correlated with local recurrences after subsegmental or conventional arterial chemoembolization therapy using iodized oil (Lipiodol-TAE). Thirty-six patients with solitary small hepatocellular carcinomas (HCCs) less than 3 cm in diameter were included in this retrospective study. Superselective subsegmental catheterization was performed in 14 patients (subsegmental Lipiodol-TAE). In the remaining 22 cases, embolization was performed from the proximal portion of the hepatic artery (conventional Lipiodol-TAE). Patterns of Lipiodol accumulations within the tumors were classified in 2 groups: complete and incomplete accumulation. Complete accumulation was observed in 71% of subsegmental Lipiodol-TAE and in 32% of conventional Lipiodol-TAE. The rate of local recurrences within 12 months was significantly higher (p < 0.01) in incomplete accumulation (100%) than in complete accumulation (13%). We suggest that when small HCCs are to be treated with TAE, subsegmental Lipiodol-TAE should be performed because of its superior capability for achieving complete Lipiodol accumulation.
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