Source:http://linkedlifedata.com/resource/umls/id/C1336316
NCI: Stage 2 includes anypT,N1-3,M0,SX. N1: Metastasis in a single lymph node, 2 cm or less in greatest dimension. N2: Metastasis in a single lymph node, more than 2 cm but not more than 5 cm in greatest dimension; or multiple lymph nodes, none more than 5 cm in greatest dimension. N3: Metastasis in a lymph node more than 5 cm in greatest dimension.