Source:http://linkedlifedata.com/resource/umls/id/C0279834
NCI: Cancer that is 2 centimeters or smaller and has not spread outside the oropharynx.,NCI: Stage I includes: T1, N0, M0. T1: Tumor 2 cm or less in greatest dimension. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)