Abstract
To clarify whether pre‐operalive transcatheter arterial embolization (TAE) improves survival after hepatectomy, a prospective randomized comparative study was done. Of a total of 115 registered patients having solitary hepatocellular carcinoma (HCC) 2 to 5 cm in diameter, 18 (15.7%) were excluded after randomization. As a result, 97 patients were chosen as subjects and divided into two groups: hepatectomy with (group A: n = 50) and without (group B: n=47) pre‐operative TAE. The period of observation of the patients who survived the surgery was between 4.0 and 6.6 years. The randomization appeared to have provided well‐balanced groups of patients and the clinico‐pathological characteristics of the two groups were quite similar. The necrotic part of the cancerous lesions, as confirmed by operative specimens, amounted to 74.8 ±33.4% (mean±SD) in group A and 6.8 ±7.2% in group B (P<0.01). However, the cancer‐free survival rates after hepatectomy in both groups showed little difference (39.1±7.0 (%±SE) and 31.1±0.1, respectively). We speculate that TAE is not effective against such HCC accessory lesions as minute intrahepatic metastasis and tumor thrombus and that pre‐operative TAE does not improve post‐operative survival.
Keywords: Pre‐operative TAE, Hepatocellular carcinoma, Recurrence, Survival rate
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