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Lobular breast cancer: Histomorphology and different concepts of a special spectrum of tumors

Articolo
Data di Pubblicazione:
2021
Abstract:
Invasive lobular breast cancer (ILC) is the most common special histological type of breast cancer (BC). This review recapitulates developments in the histomorphologic assessment of ILC from its beginnings with the seminal work of Foote and Stewart, which was published in 1941, until today. We discuss different concepts of ILC and their implications. These concepts include (i) BC arising from mammary lobules, (ii) BC growing in dissociated cells and single files, and (iii) BC defined as a morpho-molecular spectrum of tumors with distinct histological and molecular characteristics related to impaired cell adhesion. This review also provides a comprehensive overview of ILC variants, their histomorphology, and differential diagnosis. Furthermore, this review highlights recent advances which have contributed to a better understanding of the histomorphology of ILC, such as the role of the basal lamina component laminin, the molecular specificities of triplenegative ILC, and E-cadherin to P-cadherin expression switching as the molecular determinant of tubular elements in CDH1-deficient ILC. Last but not least, we provide a detailed account of the tumor microenvironment in ILC, including tumor infiltrating lymphocyte (TIL) levels, which are comparatively low in ILC compared to other BCs, but correlate with clinical outcome. The distinct histomorphology of ILC clearly reflects a special tumor biology. In the clinic, special treatment strategies have been established for triple-negative, HER2-positive, and ER-positive BC. Treatment specialization for patients diagnosed with ILC is just in its beginnings. Accordingly, ILC deserves greater attention as a special tumor entity in BC diagnostics, patient care, and cancer research.
Tipologia CRIS:
03B-Review in Rivista / Rassegna della Lett. in Riv. / Nota Critica
Keywords:
Beta-catenin; HER2; LCIS; LIN; P120-catenin; Pleomorphic; Solid; Tubulolobular
Elenco autori:
Christgen M.; Cserni G.; Floris G.; Marchio' C.; Djerroudi L.; Kreipe H.; Derksen P.W.B.; Vincent-Salomon A.
Autori di Ateneo:
MARCHIO' Caterina
Link alla scheda completa:
https://iris.unito.it/handle/2318/1801923
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1801923/802260/cancers-13-03695-v2.pdf
Pubblicato in:
CANCERS
Journal
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URL

https://www.mdpi.com/2072-6694/13/15/3695
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