Abstract
We investigated the safety and efficacy of percutaneous hot water injection therapy (PHoT) in six patients with hepatocellular carcinoma (HCC). PHoT produced the marked effect in five (62.5%) of eight lesions. No serious adverse effects have been encountered. We also compared the usefulness of percutaneous ethanol injection therapy (PEIT) (22 patients, 32 lesions) and PHoT (five patients, seven lesions) in patients with HCC with diameter of 3 cm or less. Patients in the PHoT group received significantly fewer treatments than in the PEIT group ( P < 0.01), because the volume injected per treatment was greater. Residual cancer was found in five (15.6%) of 32 lesions after PEIT and in three (42.9%) of seven lesions after PHoT, but the difference was not statistically significant. Pain tended to be less frequent in patients treated with PHoT than in patients treated with PEIT. We could not determine whether PHoT was superior to PEIT, but our findings indicate that PHoT may be a safe and effective for treating HCC.
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