Objetivo: Correlacionar as pacientes com resultado mamográfico BI-RADS 4 ou 5 submetidas a mamotomia e comparar os achados com os encontrados na histopatologia. Método: Foram selecionadas 111 pacientes as quais apresentavam lesões mamárias não palpáveis detectadas na mamografia e que realizaram mamotomia na Clínica de Oncologia e Mastologia de Natal. As amostras foram enviadas para o laboratório Dr. Getulio Sales, após radiografia das peças, e todas as pacientes tiveram de colocar clipe de titânio. Resultados: A faixa etária predominante foi de 41-50 anos (40,5%); cerca de 30,6% possuía histórico familiar de câncer de mama; entre as selecionadas, 97,3% possuíam classificação 4 do BI-RADS e 2,7% tinham classificação 5, predominando, em ambos os casos, as microcalcificações como indicação de mamotomia. A distribuição entre lesões benignas e malignas foi de 70 e 30%, respectivamente. A prevalência de lesões malignas foi de carcinoma ductal in situ (58%). Houve significância estatística com relação à suspeição de malignidade de acordo com o BI-RADS 4 e 5, p=0,018 [IC95%0,28 (0,209-0,383)]. O grau de associação verificado por meio da odds ratio mostra que o grupo BI-RADS 5 tinha 72% menos chance de ser benigno quando comparado ao grupo BI-RADS 4. Não houve relato de complicações nas pacientes submetidas a mamotomia no presente estudo. Conclusão: A mamotomia mostrou-se um método seguro no diagnóstico de lesões suspeitas (BI-RADS 4 e 5), estando dentro do observado na literatura.PALAVRAS-CHAVE: Câncer de mama; diagnóstico precoce; mamografia. RESUMO ABSTRACTObjective: To correlate patients with BI-RADS 4 or 5 mammographic results submitted to mammotomy and compare these findings to histopathological ones. Method: We selected 111 patients with non-palpable breast lesions detected on mammography and who underwent mammotomy at Clínica de Oncologia e Mastologia de Natal. The samples were sent to the laboratory Dr. Getulio Sales, after x-ray of the pieces, and all patients had to use a titanium clip. Results: The prevalent age group was 41-50 years (40.5%); approximately 30.6% had a family history of breast cancer; among the patients selected, 97.3% had a BI-RADS 4 classification and 2.7%, a BI-RADS 5; with microcalcifications being the main reason for mammotomy indication in both cases. The distribution of benign and malignant lesions was 70 and 30%, respectively. The prevalent malignant lesion was ductal carcinoma in situ (58%). Clinical suspicion of malignancy according to BI-RADS 4 and 5 was statistically significant, p=0.018 [95%CI 0.28 (0.209-0.383)]. The degree of association verified through odds ratio showed that the BI-RADS 5 group had 72% less chance of having a benign lesion when compared to the BI-RADS 4 group. There were no reports of complications in patients submitted to mammotomy in the present study. Conclusion: Mammotomy proved to be a safe method to diagnose suspicious lesions (BI-RADS 4 and 5), and its results fit what is observed in the literature.
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