Breast carcinoma: Molecular classification using immunohistochemistry

Abstract

Objective: To classify different histological types for mammary carcinoma, invasive type, with the aid of immunohistochemistry. Methods: We selected 3033 positive cases, 2433 of the invasive type, which were classified into four groups: Luminal A, luminal B, HER2-eriched, and Basal like (triple negative). We conducted a retrospective observational study between the years 2011 and 2016.Results: 2062 (84.4%) of the related to CDI SOE, following the items in decreasing order: CLI (11.3); Invasive micropapillary carcinoma (1.11%) and other types with incidence less than 1%. Conclusion: This study allowed a histological differentiation and characterization of the IHQ profile of invasive mammary carcinoma over a 6 years in the Federal District.