If you’ve recently received a cancer diagnosis, you may have heard the word “metastasis” or been asked by someone if your cancer has metastasized. But, what is metastasis? What does it mean for your cancer treatment? And is it curable?

We got details on metastasis from Jeffrey Gershenwald, M.D., a surgical oncologist who specializes in the care of patients with  melanoma and has contributed to the world’s leading guides on...