Ohio State University B-Vaxx Report, page-21

Thanks for this. Does answer the question for me anyway at least.

Cancer doctors use the term stable disease to describe a tumor that is neither growing nor shrinking. Specifically, it means that cancer has not increased in size by more than 50 percent or decreased in size by more than 30 percent. Stable disease also means that no new tumors have developed and that cancer has not spread to any new regions of the body (the cancer is not getting better or worse and has not metastasized further).