Source:http://linkedlifedata.com/resource/umls/id/C1377917
NCI: Cancer (1) is found in the nasopharynx only; or (2) 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.,NCI: Stage I includes: T1, N0, M0. T1: Tumor confined to the nasopharynx. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th ed.),NCI: Stage I includes: T1, N0, M0. T1: Nasopharyngeal cancer with tumor confined to the nasopharynx, or tumor extending to oropharynx and/or nasal cavity without parapharyngeal extension. Parapharyngeal extension denotes posterolateral infiltration of tumor. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 7th ed.)