We're not actually doing "ablation", tumer site or not. Fwiw, any tumer disturbance is historicly a bad thing, assuming the tumer is cancerous. We want to do resects, more like isolating any area to be removed, then removing the problem area.
Much examination of the basis for that FDA warning would need to be examined before I would assume RF at fault, rather than the mechanics of the procedure itsself.
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