Abstract
The purpose of this study was to assess the use of contrast-enhanced ultrasonography (CEUS) and the sustained antitumor effect of drug-eluting beads used for transarterial chemoembolisation (TACE) of unresectable hepatocellular carcinoma (HCC). Ten patients with solitary, unresectable HCC underwent CEUS before, 2 days after, and 35 to 40 days after TACE using a standard dose (4 ml) of drug-eluting beads (DC Beads; Biocompatibles, Surrey, UK) preloaded with doxorubicin (25 mg doxorubicin/ml hydrated beads). For CEUS, a second-generation contrast agent (SonoVue, Bracco, Milan, Italy) and a low mechanical-index technique were used. A part of the tumor was characterized as necrotic if it showed complete lack of enhancement. The percentage of necrosis was calculated at the sonographic section that depicted the largest diameter of the tumor. Differences in the extent of early (2 days after TACE) and delayed (35 to 40 days after TACE) necrosis were quantitatively and subjectively assessed. Early post-TACE tumor necrosis ranged from 21% to 70% (mean 43.5% +/- 19%). There was a statistically significant (p = 0.0012, paired Student t test) higher percentage of delayed tumor necrosis, which ranged from 24% to 88% (mean 52.3% +/- 20.3%). S...Continue Reading
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