Early breast cancer precursor lesions: lessons learned from molecular and clinical studies

Atypical ductal hyperplasia (ADH), flat epithelial atypia (FEA), and lobular neoplasia (LN) form a group of early precursor lesions that are part of the low-grade pathway in breast cancer development. This concept implies that the neoplastic disease process begins at a stage much earlier than in sit...

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Hauptverfasser: Sinn, Peter (VerfasserIn) , Elsawaf, Zeinab (VerfasserIn) , Helmchen, Birgit (VerfasserIn) , Aulmann, Sebastian (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: August 23, 2010
In: Breast care
Year: 2010, Jahrgang: 5, Heft: 4, Pages: 218-226
ISSN:1661-3805
Online-Zugang: Volltext
Verfasserangaben:Hans-Peter Sinn, Zeinab Elsawaf, Birgit Helmchen, Sebastian Aulmann

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520 |a Atypical ductal hyperplasia (ADH), flat epithelial atypia (FEA), and lobular neoplasia (LN) form a group of early precursor lesions that are part of the low-grade pathway in breast cancer development. This concept implies that the neoplastic disease process begins at a stage much earlier than in situ carcinoma. We have performed a review of the published literature for the upgrade risk to ductal carcinoma in situ or invasive carcinoma in open biopsy after a diagnosis of ADH, FEA, or LN in core needle biopsy. This has revealed the highest upgrade risk for ADH (28.2% after open biopsy), followed by LN (14.9%), and FEA (10.2%). With LN, the pleomorphic subtype is believed to confer a higher risk than classical LN. With all types of precursor lesions, careful attention must be paid to the clinicopathological correlation for the guidance of the clinical management. Follow-up biopsies are generally indicated in ADH, and if there is any radiological-pathological discrepancy, also in LN or FEA. 
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