Resumen

ANTELIZ B., Olga T. et al. The susceptibility to infection by Leishmania panamensis and the sensitivity to drugs differ according to the macrophage type. Rev. Univ. Ind. Santander. Salud [online]. 2011, vol.43, n.2, pp.149-158. ISSN 0121-0807.

Introduction: The degree of tumor differentiation, the expression of estrogen and progesterone receptors and HER-2/ neu protein overexpressing are important prognostic and predictive factors in the evolution and therapeutic management of invasive breast carcinoma. In different studies were found that the immunophenotypes that do not express hormonal receptors or the HER-2/neu protein overexpressing have been associated with poor tumor differentiation. Purpose: To determine the immunophenotypic profile of invasive ductal carcinoma and establish its relationship with the histological grade. Methodology: Using immunohistochemistry were determined the estrogen receptor (ER) and progesterone (PR) and HER-2/neu protein overexpression in invasive ductal carcinoma samples and their phenotypes were identified based on classification of Cheang. The histological subtype and degree of tumor differentiation in invasive ductal carcinomas were evaluated in tissue stained with hematoxylin-eosin. Results: In this study were included 58 patients with invasive ductal carcinoma. 15.5% of the carcinomas were well differentiated, 63.8% moderately differentiated and the remaining 20.7% poorly differentiated. The triple-negative immunophenotype was show in 29.3% of the samples, HER2+ in the 20.7%, luminal/HER2 + in the 1.7%, luminal A in the 43.1% and the phenotype (ER-/PR+/HER2) in the 5.2%. Conclusion: In this study don't was found association between the degree of tumor differentiation and the immunophenotypes. Salud UIS 2011; 43 (2): 149-158

Palabras clave : Invasive ductal carcinoma; degree of tumor differentiation; estrogen and progesterone receptors; HER- 2/neu.

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