Radiofrequency ablation and microwave ablation

Radiofrequency ablation (RFA) uses radio waves and microwave ablation (MWA) uses microwaves to heat neuroendocrine tumour (NET) cells in the liver and destroy them. 

You have RFA or MWA using one or more special needles called needle electrodes that go through your skin into the tumour. The electric current from the probe heats the NET cells to high temperatures which destroy them. 

The heat only travels a short distance, so it doesn’t affect most of the healthy liver tissue around it. 

Reference

https://www.cancerresearchuk.org/about-cancer/neuroendocrine-tumours-nets/treatment/radiofrequency-ablation-microwave-ablation