The technique of thyroidectomy has undergone little change in several decades. The harmonic scalpel, using ultrasonic frictional heating to ligate vessels, is widely used in laparoscopic surgery, but there is little experience in open thyroidectomy. We hypothesized that the use of the harmonic scalpel could lead to a significant reduction in operative time as compared with knot tying in thyroid surgery.

LR after RFA is predicted by certain tumor characteristics and technical factors. This information can be used intraoperatively to identify those tumors at a higher risk for failure.

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