stage IV nasopharynx cancer

Stage IV nasopharynx cancer may be one of the following. 1) Stage IVA: Cancer has spread beyond the nasopharynx to other areas in the head and may have spread to nearby lymph nodes. 2) Stage IVB: Cancer has spread beyond the nasopharynx to other areas in the head and to lymph nodes above the collarbone or that are larger than 6 cm. (larger than 2 inches). 3) Stage IVC: Cancer that has spread to other organs of the body.