a tens unit kills cancer cells?

[Lauriesh]

I was talking to a pain management dr. who recommended a tens (Transcutaneous Electrical Nerve Stimulation ) Unit for chronic ankle tendonitis pain that I have. I told him that I was a breast cancer survivor and asked him if it would be ok for me to use it. He told me that about two weeks ago it was approved by the FDA to kill cancer cells! I didn't believe him and I could not find any information about this.
Has anyone heard of this?
Or has anyone used one of these machines for pain and did it work?

Thanks

Laurie

Diagnosed 3/05 at age 37
stage 2b