What factors do you consider when deciding between RFA and surgery for a patient with a benign thyroid nodule causing dysphagia?

I primarily examine the risk of anesthesia/surgery and size of the biopsy-proven benign nodule when using ablation (thermal: RFA or microwave). We are still in a period where insurance companies just got a ICD9 for the procedure (RFA only) and it is not clear whether all insurance company will pay. ...