Summary
After 12 days of culture, VX2 carcinoma cells were inoculated into the liver of 16 rabbits; 14 days later,131I-labeled iodized oil ([131I]-Lp) suspended in lipiodol was injected into the hepatic artery. Selective accumulation of the contrast material in the tumor for an extended time was evident on X-rays and hepatic scintiphotographs. The antitumor effect was remarkable. [131I]-Lp agents warrant further examination for their clinical usefulness. Internal radiation therapy by transcatheter hepatic arterial injection of [131I]-Lp (group A) was evaluated in 9 patients with hepatocellular carcinoma (HCC, tumor stage III or IV) associated with liver cirrhosis (LC) and compared with combination therapy of Lp-TAE (group B) in 18 patients with HCC (tumor stage III or IV) associated with LC. In group A, serum AFP levels dropped rapidly in eight of the nine patients who had an elevated intial level of more than 500 ng/ml. The average reduction in tumor size was 50% in eight cases as determined by computed tomography. Histological examination of one resected liver specimen at 3 months after the third injection of [131I]-Lp revealed microscopic features highly suggestive of a radiation effect in the [131I]-Lp-containing area. The 1-year survival value for patients with HCC was estimated at 49.0% using the Kaplan-Meier method. The survival of patients treated with internal radiation therapy tended to be better than that of those treated with Lp-TAE (P=0.119).
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This work was supported in part by a Grant-in-Aid for Cancer Research from the Ministry of Health and Welfare of Japan (1986–1989)
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Yumoto, Y., Jinno, K., Inatsuki, S. et al. Treatment of hepatocellular carcinoma by transcatheter hepatic arterial injection of radioactive iodized oil solution. Cancer Chemother. Pharmacol. 31 (Suppl 1), S128–S136 (1992). https://doi.org/10.1007/BF00687122
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DOI: https://doi.org/10.1007/BF00687122