Clinical characteristics of male patients with breast cancer in the Latino population.

Purpose: Breast cancer is the most prevalent cancer type in Mexico, with male breast cancer accounting for only 1% of all breast cancer cases. A limited number of studies have described the clinical-pathological profiles of males with breast cancer in low- and middle-income countries. This study presents an analysis of patients with breast cancer seen at three different institutions in México.

Methods: A retrospective review of the medical records was performed to analyze the clinical and pathological characteristics of 49 men diagnosed with breast cancer and their overall survival.

Results: The mean age at diagnosis was 64.65 years. A significant proportion of patients presented at diagnosis with stage IV disease (n = 11, 22.45%), had triple-negative subtype (n = 6, 12.24%), and nuclear grade III (n = 20, 40.8%). Primary endocrine resistance was observed in 10 patients (31.25%). Genetic analysis was performed on 24 patients (48.9%), revealing a germline BRCA pathogenic variant in 8.33%.

Conclusion: Our findings described the clinical and pathological profile of breast cancer in a male cohort in Mexico, with a significantly high proportion of advanced disease, triple-negative subtype, nuclear grade III, and endocrine resistance. Further comprehensive studies, including research into somatic mutations, are needed.