If this treatment proves 100% successful against a given kind of cancer, and the procedure is developed to the mass-production stage, I would imagine we'd start

If this treatment proves 100% successful against a given kind of cancer, and the procedure is developed to the mass-production stage, I would imagine we'd start getting cancer. Then you'd only get the tiny initial tumors nuked and correspondingly not suffer cytokine storms when large amounts of cancer tissue dies at once.