Although non-Hodgkin lymphoma is very curable, like any cancer the disease can prove fatal if left untreated too long. Survivability therefore depends on the stage of the disease when treatment begins, and whether it has metastasized, or spread, to other parts of the body. A localized stage of non-Hodgkin lymphoma has a 5-year survival rate of 81 percent. A metastasized case, on the other hand, has a survivability rate over the same period of 58 percent. Overall survivability of non-Hodgkin lymphoma over five years is 67.4 percent.