My husband recently finished radiation and chemo treatment for a tumor on the base of his tongue that had spread to 2 lymph nodes. Eight weeks after treatment, his PET scan shows that although the tumor and lymph nodes are smaller, there is still activity in them. We had been hoping to hear that the cancer cells are gone. Is this result as ominous as it sounds to me? How long do the chemo and radiation continue to work on the cancer cells after treatment ends?
Jane