Acuidade de mamografia BI-RADS 4 e 5 na predição de malignidade em lesões não palpáveis da mama: correlação com a patologia
This study was done to evaluate the accuracy of mammography in the diagnosis of non-palpable breast lesions classified as BI-RADS 4 and 5 compared with the histopathology result, used as the "gold standard". The method was applied to 588 cases of breast biopsies with mammograms classified...
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| Formato: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Brasil |
| Recursos: | Universidade Federal de Minas Gerais (UFMG) |
| Repositorio: | Repositório Institucional da UFMG |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.ufmg.br:1843/MCGI-8TBNV2 |
| Acesso em linha: | http://hdl.handle.net/1843/MCGI-8TBNV2 |
| Access Level: | acceso abierto |
| Palavra-chave: | BI-RADS Histopatologia Câncer de mama Mamografia Neoplasias da mama/patologia Palpação Neoplasias da mama Mama Diagnostico por imagem Neoplasias da mama/radiografia Biópsia por agulha Mama Câncer Neoplasias da mama/diagnóstico Mama/anatomia & histologia |
| Resumo: | This study was done to evaluate the accuracy of mammography in the diagnosis of non-palpable breast lesions classified as BI-RADS 4 and 5 compared with the histopathology result, used as the "gold standard". The method was applied to 588 cases of breast biopsies with mammograms classified as suspicious (category 4 and 5) from the period of 1999 to 2009. The biopsies were made after marking the image with a metallic wire done with use of mammography and only cases of non-palpable breast lesions were included. The mammograms of these patients were classified according to the fourth edition of BI-RADS, evaluating categories 4 and 5. The correlation was made with mammographic and histopathological examinations of the lesions, evaluating the positive predictive value in each category. The results show 277 (47.1%) cases diagnosed with cancer, of whom 142 (32.9%) cases were Category 4 and 135 (86%) cases were category 5. The positive predictive values (PPV) for categories 4 and 5, and overall were respectively 32.9%, 86% and 47.1%. Mammography alterations more often associated with malignancy were microcalcifications (48.7%). Our results showed that the cases classified as high suspicion of malignancy (category 5) enable foretell malignancy in 86% and cases classified in category 4 in 34%.Concurring with the literature that emphasizes the need for new predictors for category 4. |
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