NESTOR DE BARROS

(Fonte: Lattes)
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Lattes
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Departamento de Radiologia, Faculdade de Medicina - Docente
Instituto de Radiologia, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina

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Assunto: Oncology ×

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Agora exibindo 1 - 8 de 8
  • article 12 Citação(ões) na Scopus
    The Impact of Breast Cancer Screening Among Younger Women in the Barretos Region, Brazil
    (2013) MATTOS, Jaco Saraiva De Castro; MAUAD, Edmundo Carvalho; SYRJANEN, Kari; LONGATTO-FILHO, Adhemar; HAIKEL, Raphael Luiz; VIEIRA, Rene Aloisio Da Costa; SILVA, Thiago Buosi; BARROS, Nestor De
    Aim: To verify the impact of breast cancer screening in women aged 40-49 years in one region of Brazil. Patients and Methods: This is a cross-sectional study, targeted to asymptomatic women aged 40-69 years who had breast cancer screening mammography performed between January 2003 and December 2007. Logistic regression was used to estimate the risk of breast cancer by age groups (40-49, 5059, 60-69 years). Results: Of the 27,133 screened women, 51.9% (14,082) were aged between 40-49 years. The odds ratio (OR) of breast cancer among the 45-49 year age cohort was not significantly different from that of 60 to 69-year-old women (OR=0.64; 95% Confidence Interval 0.39 to 1.03). Conclusion: The risk of breast cancer among women aged 45 to 49 years is equivalent to that of women aged 60 to 69 years, indicating that breast cancer screening in this region of Brazil should start at the age of 45 years or immediately thereafter.
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    Brazilian randomized study: Impact of preoperative magnetic resonance in the evaluation for breast cancer conservative surgery (BREAST-MRI Trial)
    (2019) MOTA, B. S.; REIS, Y. N.; DORIA, M. T.; RICCI, M. D.; SHIMIZU, C.; FERREIRA, V.; TUCUNDUVA, T.; BARROS, N. de; BARACAT, E. C.; FILASSI, J. R.
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    Brazilian Randomized Study - BREAST-MRI Trial - Impact of Preoperative Magnetic Resonance in the Evaluation for Breast Cancer Conservative Surgery: Local recurrence and surgical outcomes
    (2023) MOTA, Bruna S.; REIS, Yedda N.; BARROS, Nestor; CARDOSO, Natalia; MOTA, Rosa S.; SHIMIZU, Carlos; TUCUNDUVA, Tatiana; GONCALVES, Rodrigo; DORIA, Maira T.; FERREIRA, Vera; RICCI, Marcos; TRINCONI, Angela; RIERA, Rachel; BARACAT, Edmund C.; SOARES JR., Jose Maria; FILASSI, Jose Roberto
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    Brazilian randomized study - Impact of preoperative magnetic resonance in the evaluation for breast cancer conservative surgery (BREAST-MRI trial)
    (2018) DORIA, Maira T.; MOTA, Bruna S.; REIS, Yedda N.; RICCI, Marcos D.; PIATO, Jose R. M.; FERREIRA, Vera C. C. S.; SHIMIZU, Carlos; BARROS, Nestor; FILASSI, Jose R.; BARACAT, Edmund C.
  • article 17 Citação(ões) na Scopus
    Papillomas of the breast: factors associated with underestimation
    (2018) BOUFELLI, Gabriela; GIANNOTTI, Marcelo A.; RUIZ, Carlos A.; BARROS, Nestor de; CHALA, Luciano E.; MAESAKA, Jonathan Y.; GONCALVES, Rodrigo; BRESCIANI, Barbara H.; VIANNA, Paula; SOARES JR., Jose. M.; BARACAT, Edmund C.; FILASSI, Jose. R.
    The distinction between benign and malignant papilloma of the breast through percutaneous needle biopsy can be difficult because of limited samples; the underestimation rate can be up to 25%. The aim of this study is to identify clinical and histological factors associated with underestimation, invasive ductal carcinoma, or ductal in-situ carcinoma (DCIS) of the breast found in surgical specimens from papillary lesions. This may contribute toward selection of patients for a follow-up strategy without the need for surgical excision. From a database of 3563 patients, we identified 85 with intraductal papilloma between 2007 and 2013 who had undergone breast-imaging studies, percutaneous needle biopsy, and surgical resection of the lesion. Central papillomas normally present with a palpable mass, whereas peripheral papillomas generally do not have clinical manifestations (microcalcifications); both central and peripheral papillomas were related to atypical lesions, 13.5 and 15.4%, respectively. Among the 59 cases of central papillomas, there were four cases of underestimation, three DCIS and one invasive ductal carcinoma (6.8%). Among the 26 cases of peripheral papillomas, there was one case of DCIS (3.8%), with a total underestimation rate of 5.8%; all underestimated lesions measured more than 1cm. The median size was 11mm at mammography and 19mm at ultrasound. Our data suggest that lesions less than 1cm in size, without atypia and concordant imaging and clinical findings, may not require surgical resection.
  • article 16 Citação(ões) na Scopus
    Development of a Model to Predict Invasiveness in Ductal Carcinoma In Situ Diagnosed by Percutaneous Biopsy-Original Study and Critical Evaluation of the Literature
    (2018) DARIA, Maira Teixeira; MAESAKA, Jonathan Yugo; AZEVEDO NETO, Raymundo Soares de; BARROS, Nestor de; BARACAT, Edmund Chada; FILASSI, Jose Roberto
    Our aim was to develop a model to predict invasiveness in patients with a diagnosis of ductal carcinoma in situ found at percutaneous biopsy. The calculated sample size was 296 patients. We used Nagelkerke's R-2 and Hosmer-Lemeshow goodness-of-fit tests to improve statistical analysis. We evaluated 354 patients and developed 2 models that have the best discrimination reported to date. Background: Approximately 30% of ductal carcinoma in situ (DCIS) cases have an invasive component discovered on the final analysis that could affect surgical management. The aims of the present study were to determine the risk factors associated with the underestimation of DCIS and to develop a model to predict the probability of invasiveness. Materials and Methods: A retrospective analysis was performed on the data for all patients with a diagnosis of DCIS found by percutaneous biopsy from January 2008 to February 2016. Thirteen potential predictors of invasiveness were examined. The statistical analysis of the present study was improved using Nagelkerke's R-2, the area under the receiving operating characteristic (AUC) curve, and the Hosmer-Lemeshow goodness-of-fit test. Results: Of 354 biopsy specimens deemed to be DCIS on initial biopsy, 100 (28.2%) were recategorized as invasive carcinoma after surgery. On multivariate analysis, the strongest predictors of invasiveness were comedonecrosis, size on mammography, suspected microinvasion, histologic grade, and younger patient age. The model had a good discriminative ability, with an AUC of 0.764. The overall performance of the model was fair, with a Nagelkerke's R-2 of 40.9%. A separate analysis performed on 274 specimens obtained through vacuum-assisted biopsy revealed different variables were associated with underestimation; however, a similar AUC (0.743) and Nagelkerke's R-2 (45.7% ) were obtained. Conclusion: Our model had the best AUC for predicting DCIS invasiveness reported to date. However, further statistical analysis showed only a fair overall performance. The currently known clinical, radiographic, and pathologic features might be insufficient to identify which patients with DCIS have underestimated disease.
  • conferenceObject
    Magnetic resonance imaging to predict nipple involvement in breast cancer patients
    (2016) PIATO, J. R.; CHALA, L. F.; ALVES-JALES, R. D.; DORIA, M. T.; MOTA, B. S.; MESSIAS, A. P.; GONCALVES, R.; MANO, M. S.; SOARES, J. M.; BARROS, N. de; FILASSI, J. R.; BARACAT, E. C.
  • article 10 Citação(ões) na Scopus
    Breast fibroadenoma in transgender woman
    (2020) FARIA, Luisa Leitao de; BRASIL, Sergio Tufik; ENDO, Erica; CHALA, Luciano; SHIMIZU, Carlos; BARROS, Nestor de