Article ; Online: Neoadjuvant Therapy in Breast Cancer: Histologic Changes and Clinical Implications.
Surgical pathology clinics
2022 Volume 15, Issue 1, Page(s) 57–75
Abstract: Cytotoxic or endocrine therapy before surgery (neoadjuvant) for breast cancer has become standard of care, affording the opportunity to assess and quantify response in the subsequent resection specimen. Correlation with radiology, cassette mapping, and ... ...
Abstract | Cytotoxic or endocrine therapy before surgery (neoadjuvant) for breast cancer has become standard of care, affording the opportunity to assess and quantify response in the subsequent resection specimen. Correlation with radiology, cassette mapping, and histologic review with a semi-quantitative reporting system such as residual cancer burden (RCB) provides important prognostic data that may guide further therapy. The tumor bed should be identified histologically, often as a collagenized zone devoid of normal breast epithelium, with increased vasculature. Identification of residual treated carcinoma may require careful high power examination, as residual tumor cells may be small and dyscohesive; features are widely variable and include hyperchromatic small, large, or multiple nuclei with clear, foamy, or eosinophilic cytoplasm. Calculation of RCB requires residual carcinoma span in 2 dimensions, estimated carcinoma cellularity (% area), number of involved lymph nodes, and span of largest nodal carcinoma. These RCB parameters may differ from AJCC staging measurements, which depend on only contiguous carcinoma in breast and lymph nodes. |
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MeSH term(s) | Antineoplastic Combined Chemotherapy Protocols ; Breast/pathology ; Breast Neoplasms/pathology ; Female ; Humans ; Neoadjuvant Therapy ; Neoplasm, Residual ; Prognosis |
Language | English |
Publishing date | 2022-01-31 |
Publishing country | United States |
Document type | Journal Article ; Review |
ISSN | 1875-9157 |
ISSN (online) | 1875-9157 |
DOI | 10.1016/j.path.2021.11.004 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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