Reply #22: Ah, got it.

[trotsky]

That's the problem with abstracts - so much detail left out. Could it be that the electrical probes are in direct contact with the tumor, and nothing else? Then the "overlying skin" would still not feel any electrical current, but instead only the 3 degree increase in heat, which is certainly not enough to harm tissue.

Not to mention that the top layer of your skin is mostly dead cells.