Abstract:Background: Ductal carcinoma in situ (DCIS) of the breast is a heterogeneous group with variable clinical presentation. 70-80% of DCIS are classified as grade 3 (Van Nuys Classification). They are treated according to grade and extension of the lesion, as was the standard treatment for invasive breast cancer in the 1970`s. Molecular genetic studies of invasive breast carcinomas (BC) have defined a molecular subclassification. In routine diagnostics, we use surrogate markers like estrogen receptors (ER), proges… Show more
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