ABSTRACT
INTRODUCTION/BACKGROUND: This study aims to evaluate the reproducibility of findings from randomized controlled trials regarding adjuvant hormone therapy (HT) for breast ductal carcinoma in situ (DCIS) in a real-life scenario. MATERIALS/METHODS: This retrospective cohort study used Fundação Oncocentro de São Paulo database. It included DCIS patients DCIS who received breast-conserving surgery and postoperative radiation therapy. The endpoints were local control (LC), breast cancer-specific survival (BCSS), and overall survival (OS). RESULTS: We analyzed 2192 patients treated between 2000 and 2020. The median FU was 48.99 months. Most patients (53.33%; n = 1169) received adjuvant HT. Patients not receiving adjuvant HT tend to be older (P = .021) and have a lower educational level (P < .001). At the end of FU, 1.5% of patients had local recurrence, and there was no significant difference between groups (P = .19). The 10-year OS and BCSS were 89.4% and 97.5% for adjuvant HT versus 91.5% and 98.5% for no adjuvant HT, respectively, and there were no significant differences between groups. The 10-year OS was 93.25% for medium/high education level versus 87.31% for low (HR for death 0.51; 95% CI, 0.32-0.83; P = .007). CONCLUSIONS: The benefits of adjuvant HT for DCIS were not reproduced in a Brazilian cohort. Education significantly impacted survival and HT usage, reflecting the influence of socioeconomic factors. These findings can allow for more precise interventions.
Subject(s)
Breast Neoplasms , Carcinoma, Intraductal, Noninfiltrating , Female , Humans , Antineoplastic Agents, Hormonal/therapeutic use , Brazil/epidemiology , Breast Neoplasms/pathology , Carcinoma, Intraductal, Noninfiltrating/drug therapy , Carcinoma, Intraductal, Noninfiltrating/radiotherapy , Carcinoma, Intraductal, Noninfiltrating/surgery , Mastectomy, Segmental , Neoplasm Recurrence, Local/pathology , Radiotherapy, Adjuvant , Randomized Controlled Trials as Topic , Reproducibility of Results , Retrospective Studies , Cohort StudiesABSTRACT
Objetivo: Comparar o diagnóstico inicial, geralmente a partir de serviços de patologia geral, com o laudo médico definitivo do serviço de patologia certificada. Métodos: Análise retrospectiva de pacientes em uma instituição com diagnóstico final de câncer de mama metaplásico (CMM) foi realizada entre janeiro de 2008 e janeiro de 2014. Resultados: Um total de 18 pacientes com diagnóstico de CMM do sexo feminino e idade média de 49,8 anos foi reportado. O tamanho tumoral foi menor do que 3,0 cm em 52,9% das pacientes. Linfadenopatia axilar não estava presente inicialmente em 72,2% das pacientes e, em nenhum caso, foi identificada metástase a distância ao diagnóstico. Diagnóstico prévio de carcinoma ductal invasivo (CDI) foi descrito em 60% dos casos. Cerca de 80% foram tratadas com quimioterapia neoadjuvante e apresentaram progressão. Apenas um caso com diagnóstico de CMM antes do início da terapia recebeu quimioterapia neoadjuvante com platina e apresentou resposta clínica. Conclusão: Devido às características histopatológicas de triplo-negativos, o CMM pode ter sido subdiagnosticado em serviços de patologia geral. Nos casos de ausência de resposta ou progressão da doença frente ao tratamento tradicional, o diagnóstico de CMM deve ser considerado e o laudo médico deve ser revisado.
Objective: To compare the initial diagnosis, usually from community pathology services, with the final pathology report from certified pathology service. Methods: A retrospective analysis of patients in an institution with final diagnosis of metaplastic breast cancer (MBC) was conducted from January 2008 to January 2014. Results: There were 18 female patients diagnosed with MBC. Median age was 49.8 years old; 52.9% of the patients had a tumor size less than 3.0 cm; 72.2% had no axillary lymphadenopathy at diagnosis. None of them had distant metastases at presentation. Initial diagnosis of invasive ductal carcinoma (IDC) occurred in 60% of patients. Eighty percent of patients were treated with neo-adjuvant chemotherapy and presented progression. Only one case with diagnosis of MBC prior to therapy was submitted to neo-adjuvant chemotherapy with a platinum-based regimen and presented clinical response. Conclusion: Due to the triple-negative histopathology features, MBC might have been underdiagnosed in community pathology services. In cases of non-response or progression of the disease regarding the traditional treatment, MBC diagnosis should be considered and the medical report must be reviewed.
