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Radiofrequency Ablation Radiofrequency ablation is a treatment that can be applied to some liver tumors that are unresectable. The technique involves placement of a thin electrode (similar to a needle) into the center of a liver tumor, usually with the assistance of either CAT scan or ultrasound imaging. The electrode can be inserted through the skin often times, such that an operation is not required, much as a liver biopsy can be performed without the need for an operation. Local anesthesia is commonly used to minimize the discomfort of electrode insertion. The electrode is then connected to an electrical generator, and as current passes from the electrode tip to a grounding pad, the tumor is heated to a point where it is destroyed. This portion of the procedure generally does not produce any discomfort. During the procedure, vital signs, tumor temperature, and electrical properties of the tumor are monitored. The efficacy of treatment is assessed by CAT scan one month following treatment. Re-treatments are often necessary. Risks of the procedure include bleeding, although this is extremely rare. |
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