Does anyone have experience with coffee enemas for cats with cancer?

A holistic, integrative vet that I just saw feels that coffee enemas would flush the toxins out of my 12-yr old boy, Moo, who has lymphoma in his intestines.  I am already giving my little boy supplements and medicine, and slowly changing his diet to raw.  What are your thoughts?   Thank you for your responses.

I come from an alternative health background with a masters degree from an accredited (real accreditation) natural health university. Just so you know where I'm coming from. 

There is no science to back up the use of coffee enemas for cats (or humans). It's experimental and the results are anecdotal. What you have to worry about here is increasing your cat's stress level which can have a detrimental effect on your cat's cancer and decreasing your cats quality of life.

I agree.  Not worth the stress - it would be incredibly traumatic.

Thank you for your responses.  I've already decided against it.