Sorry to hear that so much effort did not work. Your efforts as described exceed those of 99.9% of people.
How large is your tumor? Is ablation an option? That is much less invasive than '-ectomy' surguries...
I agree with the 'walled off' description. It could be why my own cyst (2 cm, kidney, but probably malignant) was not affected by an 8-day and then 14-day fast..