I considered doing something like this 30 years ago, except I would have injected a solution of gold micro particles into the tumor and then used a maser to excite them.
it would cauterize the blood supply and fry the tumor at the same time.
Everything in the world, living or inanimate, has what is called a ‘resonant frequency’.
If you find the resonant frequency of an object and vibrate it with enough energy at that frequency it will be destroyed.
That is the reason a crystal wine glass will shatter at its resonant frequency produced by a singer or amp and speaker.
You should be able to take a sample of the tumor and find its resonant frequency empirically, the subject the patient to that frequency. The tumors should all be destroyed. Healthy cells and tissue will not be affected...................