What is AJCC breast cancer staging?
The American Joint Committee on Cancer (AJCC) provides two principal groups for breast cancer staging: anatomic, which is based on extent of cancer as defined by tumor size (T), lymph node status (N), and distant metastasis (M); and prognostic, which includes anatomic TNM plus tumor grade and the status of the …
What is the AJCC 8th edition?
The Eighth Edition of the AJCC Cancer Staging Manual, published in October 2016, is a compendium of all currently available information on the staging of adult cancers for all clinically important anatomic sites.
What does pN2a mean?
pN2a means there are cancer cells in 4 to 9 the lymph nodes in the armpit, and at least one is larger than 2 mm. pN2b means there are cancer cells in the lymph nodes behind the breast bone (the internal mammary nodes), which have been seen on a scan or felt by the doctor.
What is a pT2 tumor?
pT2: The tumor is in the testicle, which may include the rete testis, and it has grown into 1 or more of the following parts of the testicle: Blood vessels or lymphatic vessels in the testicle.
What are the changes in TNM staging for breast cancer?
The only major change in TNM staging for breast tumors from Version 6 to Version 7 is the new sub-division of Stage I to Stage IA and IB [11]. Stage IB now includes small tumors with micrometastases in lymph nodes (N1mi), which were previously included as part of Stage IIA.
What is the AJCC staging system for breast cancer?
The staging system most often used for breast cancer is the American Joint Committee on Cancer (AJCC) TNM system. The most recent AJCC system, effective January 2018, has both clinical and pathologic staging systems for breast cancer: N1a: Cancer has spread to 1 to 3 lymph nodes under the arm with at least one area of cancer spread greater
What are the changes to the AJCC breast cancer stage 8th edition?
AJCC Breast Cancer Stage – 8 thEdition – January 2018 AJCC Breast Cancer Stage – 8thEdition 7 th vs 8 edition clarifications and changes – Clarifications: “m” modifier pMX Changes: LCIS no longer classified as Tis Prognostic stage groups (UICC did not adopt this change and continues to use anatomic staging)
Can epidemiologic studies of breast cancer prognosis accurately apply current staging criteria?
Epidemiologic studies of breast cancer prognosis using cancer registry data can accurately apply current cancer staging criteria to historical breast cancer cases. Acknowledgements