CORRELATION OF MAMMOGRAPHIC AND HISTOPATHOLOGICAL FINDINGS IN PATIENTS SUBMITTED TO MAMMOTOMY

Abstract

Objective: 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.