Let's talk about how metastatic pheochromocytoma might be treated. First, remember what the word metastasis means? Metastasis is when cancer forms in one part of the body and that same cancer, those cancer cells spread somewhere far away. So when pheochromocytoma is, are cancerous and they spread, sometimes we use what's called systemic treatment. By that we mean treatment that goes all over your body to treat the deposits of cancer, wherever they might be specifically for pheochromocytoma doctors use radioactive iodine, like medication to treat pheochromocytoma cells that have spread elsewhere.