Source:http://linkedlifedata.com/resource/umls/id/C1336098
NCI: Stage 0 includes: 0a (Ta, N0, M0); 0is (Tis, N0, M0). Ta: Papillary noninvasive carcinoma. Tis: Carcinoma in situ. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 7th ed.)