Source:http://linkedlifedata.com/resource/umls/id/C0278949
NCI: Cancer (1) is found in the nasopharynx only or has spread from the nasopharynx to the oropharynx (the middle part of the throat, including the soft palate, base of the tongue, and tonsils) and/or to the nasal cavity. Cancer has spread to one or more lymph nodes on one side of the neck and/or to lymph nodes behind the pharynx, and the affected lymph nodes are 6 centimeters or smaller; or (2) is found in the parapharyngeal space (area near the pharynx, between the base of the skull and the lower jaw). Cancer may have spread to one or more lymph nodes on one side of the neck and/or to lymph nodes behind the pharynx, and the affected lymph nodes are 6 centimeters or smaller.,NCI: Stage II includes: IIA (T2a, N0, M0); IIB (T1, N1, M0), (T2, N1, M0), (T2a, N1, M0); (T2b, N0, M0); (T2b, N0, M0); (T2b, N1, M0). T2: Tumor extends to soft tissues. T2a: Tumor extends to the oropharynx and/or nasal cavity without parapharyngeal extension. T2b: Any tumor with parapharyngeal extension. N1: Unilateral metastasis in lym