Prospective study: Impact of breast magnetic resonance imaging on oncoplastic surgery and on indications of mastectomy in patients who were previously candidates to breast conserving surgery.

Background: Routine use of magnetic resonance imaging (MRI) in the staging of patients with early breast cancer is still controversial. Oncoplastic surgery (OP) allows for wider resections without compromising the aesthetic results. This study aimed to assess the impact of preoperative MRI on surgical planning and on indications of mastectomy.

MicroRNAs miR-142-5p, miR-150-5p, miR-320a-3p, and miR-4433b-5p in Serum and Tissue: Potential Biomarkers in Sporadic Breast Cancer.

Breast cancer (BC) is a heterogeneous disease, and establishing biomarkers is essential to patient management. We previously described that extracellular vesicle-derived miRNAs (EV-miRNAs) miR-142-5p, miR-150-5p, miR-320a, and miR-4433b-5p in serum discriminated BC from control samples, either alone or combined in a panel. Using these previously described markers, we intend to evaluate whether the same markers identified in EVs are also potential biomarkers in tissue and serum.

Integrated copy number and miRNA expression analysis in triple negative breast cancer of Latin American patients.

Triple negative breast cancer (TNBC), a clinically aggressive breast cancer subtype, affects 15-35% of women from Latin America. Using an approach of direct integration of copy number and global miRNA profiling data, performed simultaneously in the same tumor specimens, we identified a panel of 17 miRNAs specifically associated with TNBC of ancestrally characterized patients from Latin America, Brazil. This panel was differentially expressed between the TNBC and non-TNBC subtypes studied ( ≤ 0.

Evaluation of Aesthetic and Quality-of-Life Results after Immediate Breast Reconstruction with Definitive Form-Stable Anatomical Implants.

Background: Although there are many reports on different techniques in breast reconstruction, there are few data regarding immediate breast reconstruction with definitive form-stable anatomical implants in terms of aesthetics and quality-of-life outcomes.

Methods: Ninety-four patients underwent mastectomy with immediate breast reconstruction using anatomical implants and contralateral symmetrization. Aesthetic results were evaluated by three different methods: the patient's self-report, the assessment of four independent specialists (two breast surgeons and two plastic surgeons from different institutions), and the BCCT.

Characterization of MTAP Gene Expression in Breast Cancer Patients and Cell Lines.

MTAP is a ubiquitously expressed gene important for adenine and methionine salvage. The gene is located at 9p21, a chromosome region often deleted in breast carcinomas, similar to CDKN2A, a recognized tumor suppressor gene. Several research groups have shown that MTAP acts as a tumor suppressor, and some therapeutic approaches were proposed based on a tumors´ MTAP status.

Comparative Proteomics of Tumor and Paired Normal Breast Tissue Highlights Potential Biomarkers in Breast Cancer.

Background/aim: Breast cancer is the most common type of cancer among women worldwide, and about 57,000 new cases are expected for the Brazilian population in 2015. Elucidation of protein expression and modification is essential for the biological understanding, early diagnosis and therapeutics of breast cancer. The main objectives of the study are comparison between the proteome of tumor and paired non-tumor breast cancer tissues, describing all identified proteins, highlighting the ones most differentially expressed and comparing the data with existing literature.

Comparative proteomics of primary breast carcinomas and lymph node metastases outlining markers of tumor invasion.

Background: Lymph node metastasis is an important clinicopathological parameter for breast cancer prognostication and treatment. Although the development of metastasis is common in axillary lymph nodes, the mechanisms underlying the locoregional spread are yet poorly understood. In the present study, we outline the involvement of proteins in tumor invasion by comparing the proteome profile of primary breast tumors (PBT) against that of lymph node metastasis (LNM).

Long-Term Comparison of Aesthetical Outcomes After Oncoplastic Surgery and Lumpectomy in Breast Cancer Patients.

Background: Lumpectomy may result in major deformities and asymmetries in approximately one-third of patients. Although oncoplastic surgery (OP) could be a useful alternative to avoid them, lack of strong data is causing some debate. The purpose of this study was to compare aesthetic outcomes in patients undergoing OP versus lumpectomy using three different assessment methods.

Ethics in sentinel node biopsy in breast cancer: an open question.

The sentinel node concept agrees with the modern principles of surgical oncology in breast cancer, which are related to lymphatic dissection, accurate axillary study, and less traumatic surgery. After publication of many series, it has proven its capacity to correctly stage axilla and select patients who need axillary dissection. The Brazilian Society of Senology established the current norms for its practice.