Abstract
Purpose of review
The purpose of this review is to provide an overview of ten unique breast cancer subtypes and their clinicopathologic features and treatment implications.
Recent findings
Recent findings show that while many subtypes (mucinous, papillary, tubular, apocrine) have favorable biology, with better overall survival than invasive ductal carcinoma, some (metaplastic, adenoid cystic) are more aggressive portending worse prognosis for patients.
Summary
The differences in histology represented in these breast cancer subtypes often impacts biology, behavior, and prognosis. Due to their rarity, additional research is needed to implement clear treatment protocols for each subtype.
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References
Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance
Apocrine
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Medullary
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Adenoid Cystic
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Signet Ring
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Tall Cell
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Metaplastic
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Neuroendocrine
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Tubular Carcinoma
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Kempson R. Stanford school of medicine surgical pathology criteria: tubular carcinoma of the breast; 2008. [Internet] http://surgpathcriteria.stanford.edu/breast/tubularcabr.
Jorns JM, Thomas DG, Healy PN, et al. Estrogen receptor expression is high but is of lower intensity in tubular carcinoma than in well-differentiated invasive ductal carcinoma. Arch Pathol Lab Med. 2014;138(11):1507–13. https://doi.org/10.5858/arpa.2013-0621-OA.
Cooper HS, Patchefsky AS, Krall RA. Tubular carcinoma of the breast. Cancer. 1978;42:2334–42.
Knape N, Park JH, Agala CB, et al. Can We Forgo Sentinel Lymph Node Biopsy in Women Aged ≥ 50 Years with Early-Stage Hormone-Receptor-Positive HER2-Negative Special Histologic Subtype Breast Cancer? Ann Surg Oncol. 2023;30:1042–50. https://doi.org/10.1245/s10434-022-12626-6.
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• Upasana Joneja, Juan Palazzo; The Spectrum of Mucinous Lesions of the Breast. Arch Pathol Lab Med. 1 January 2023; 147 (1): 19–29. https://doi.org/10.5858/arpa.2022-0054-RA. This study reviewed the range of mucinous lesions and reinforced the need for sufficient tissue for pathologic diagnosis as there are unique treatments and prognoses for each. This paper includes a detailed summary chart of mucinous lesions of the breast.
Mucinous
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Papillary
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A.C and C.C. wrote the main manuscript text. J.J and R.C prepared figure 1 and associated caption. All authors reviewed the manuscript.
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Cobb, A.N., Czaja, R., Jorns, J. et al. Breast Cancer Subtypes: Clinicopathologic Features and Treatment Considerations. Curr Breast Cancer Rep 16, 150–160 (2024). https://doi.org/10.1007/s12609-024-00541-6
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DOI: https://doi.org/10.1007/s12609-024-00541-6