8: TNM of Breast Cancer Flashcards
Tumor larger than 5 cm in greatest dimension
T3
No regional lymph node metastases
N0
Metastases in ipsilateral axillary lymph nodes that are clinically fixed or matted (a), or in clinically detected (by imaging studies or clinical examination) ipsilateral internal mammary nodes in the absence of clinically evident axillary lymph node metastases (b)
N2
Carcinoma in situ: ductal carcinoma in situ, lobular carcinoma in situ, or Paget’s disease of the nipple with no associated invasive carcinoma or carcinoma in situ (Paget’s disease with a tumor is classified according to tumor size)
Tis
Metastases in ipsilateral infraclavicular lymph node(s) with or without axillary lymph node involvement (a), or in clinically detected (by imaging studies or clinical examination) apparent ipsilateral internal mammary lymph node(s) with clinically evident axillary lymph node metastasis (b), or metastases in ipsilateral supraclavicular lymph node(s) with or without axillary or internal mammary lymph node involvement (c)
N3
Regional lymph nodes cannot be assessed (e.g., previously removed)
NX
Tumor 2 cm or smaller in greatest dimension (may be subdivided into mi, a, b, and c, depending on the exact size of the tumor)
T1
Metastases in movable ipsilateral axillary node(s)
N1
Tumor of any size with direct extension to the chest wall (a), skin (b), or both (c); inflammatory carcinoma (d)
T4
Tumor larger than 2 cm but not larger than 5 cm in greatest dimension
T2
No clinical or radiographic evidence of distant metastases
M0
No evidence of primary tumor
T0
Primary tumor cannot be assessed
TX
Distant detectable metastases
M1
