Subtipos del carcinoma luminal de mama según el consenso de Saint Gallen en un grupo de pacientes venezolanas

INTRODUCTION: Breast cancer is the most frequent malignancy in women worldwide. Different intrinsic subtypes have different prognoses and their prevalence varies significantly according to the criteria established in the Saint Gallen Consensus. OBJECTIVE: To classify the luminal subtypes of breast carcinoma according to Saint Gallen 2009, 2011, 2013, and 2015 consensuses in a group of Venezuelan patients. MATERIALS AND METHODS: We conducted a retrospective study in 209 patients with infiltrating ductal carcinoma of the breast followed up at the Institute of Oncology "Dr. Miguel Pérez Carreno" in Valencia, Venezuela. RESULTS: The distribution of the luminal A and B subtypes changed after the reclassification of the cases according to 2011, 2013, and 2015 Saint Gallen Consensuses. The luminal B subtype was the most common in the study series. CONCLUSIONS: With the use of a classification based on the latest Saint Gallen criteria we identified more luminal B tumors. This could contribute to selecting those patients who can avoid adjuvant chemotherapy and/or benefit from the adjuvant hormonal therapy in clinical practice.