N0 |
Breast Cancer cN0 TNM Finding |
C73347 |
NCI Thesaurus |
Breast cancer with no regional lymph node metastasis. (from AJCC 6th and 7th Eds.) |
N1 |
Breast Cancer cN1 TNM Finding |
C73348 |
NCI Thesaurus |
Breast cancer with metastasis to movable ipsilateral level I, II axillary lymph node(s). (from AJCC 6th and 7th Eds.) |
N2 |
Breast Cancer cN2 TNM Finding v7 |
C88368 |
NCI Thesaurus |
Breast cancer with metastases in ipsilateral level I, II axillary lymph nodes that are clinically fixed or matted; or in clinically detected ipsilateral internal mammary nodes in the absence of clinically evident axillary lymph node metastases. "Clinically detected" is defined as detected by imaging studies (excluding lymphoscintigraphy) or by clinical examination and having characteristics highly suspicious for malignancy or a presumed pathologic macrometastasis based on fine needle aspiration biopsy with cytologic examination. (from AJCC 7th Ed.) |
N2a |
Breast Cancer cN2a TNM Finding |
C73350 |
NCI Thesaurus |
Breast cancer with metastases in ipsilateral level I, II axillary lymph nodes fixed to one another (matted) or to other structures. (from AJCC 6th and 7th Eds.) |
N2b |
Breast Cancer cN2b TNM Finding v7 |
C88369 |
NCI Thesaurus |
Breast cancer with metastases only in clinically detected ipsilateral internal mammary nodes and in the absence of clinically evident level I, II axillary lymph node metastases. "Clinically detected" is defined as detected by imaging studies (excluding lymphoscintigraphy) or by clinical examination and having characteristics highly suspicious for malignancy or a presumed pathologic macrometastasis based on fine needle aspiration biopsy with cytologic examination. (from AJCC 7th Ed.) |
N3 |
Breast Cancer cN3 TNM Finding v7 |
C88370 |
NCI Thesaurus |
Breast cancer with metastases in ipsilateral infraclavicular (level III) axillary lymph node(s) with or without level I, II axillary lymph node involvement; or in clinically detected ipsilateral internal mammary lymph node(s) with clinically evident level I, II axillary lymph node metastases; or metastases in ipsilateral supraclavicular lymph node(s) with or without axillary or internal mammary lymph node involvement. (from AJCC 7th Ed.) |
N3a |
Breast Cancer cN3a TNM Finding |
C73353 |
NCI Thesaurus |
Breast cancer with metastasis in ipsilateral infraclavicular lymph node(s). (from AJCC 6th and 7th Eds.) |
N3b |
Breast Cancer cN3b TNM Finding |
C73354 |
NCI Thesaurus |
Breast cancer with metastasis in ipsilateral internal mammary lymph node(s) and axillary lymph node(s). (from AJCC 6th and 7th Eds.) |
N3c |
Breast Cancer cN3c TNM Finding |
C73355 |
NCI Thesaurus |
Breast cancer with metastasis in ipsilateral supraclavicular lymph node(s). (from AJCC 6th and 7th Eds.) |
NX |
Breast Cancer cNX TNM Finding |
C73346 |
NCI Thesaurus |
Breast cancer in which regional lymph nodes cannot be assessed. (from AJCC 6th and 7th Eds.) |