Magnetic resonance imaging-guided vacuum-assisted breast biopsy: experience and preliminary results of 205 procedures.

Autor: Carneiro GAC; Clínica de Diagnóstico Por Imagem ( CDPI), Rio de Janeiro, RJ, Brazil., Pereira FPA; Clínica de Diagnóstico Por Imagem ( CDPI), Rio de Janeiro, RJ, Brazil., Lopes FPPL; Clínica de Diagnóstico Por Imagem ( CDPI), Rio de Janeiro, RJ, Brazil., Calas MJG; Clínica de Diagnóstico Por Imagem ( CDPI), Rio de Janeiro, RJ, Brazil.
Jazyk: angličtina
Zdroj: Radiologia brasileira [Radiol Bras] 2018 Nov-Dec; Vol. 51 (6), pp. 351-357.
DOI: 10.1590/0100-3984.2017.0132
Abstrakt: Objective: To demonstrate the frequency of malignancy and histological characteristics of lesions in patients submitted to vacuum-assisted breast biopsy guided by magnetic resonance imaging (MRI).
Materials and Methods: This was a retrospective study of MRI-guided vacuum-assisted breast biopsies performed between April 2008 and December 2016, in which we analyzed clinical and epidemiological data, as well as the BI-RADS classification and histopathological results. We compared nodules and non-nodular enhancements, in terms of their correlation with malignancy, using chi-square test.
Results: Among 215 cases referred for MRI-guided vacuum-assisted breast biopsy, the procedure was contraindicated in 10 cases (5%) and was technically feasible in the remaining 205 (95%). Non-nodular enhancements were observed in 135 cases (66%), and nodules were observed in 70 (34%), with a mean diameter of 2.2 cm (range, 0.5-9.6 cm) and 0.97 cm (range, 0.5-2.2 cm), respectively. Of the 205 lesions analyzed, 43 (21%) were malignant, 129 (63%) were benign, and 33 (16%) were classified as high-risk lesions. The most common histological findings were invasive ductal carcinoma and, in high-risk cases, lobular neoplasia. There was no significant difference between nodules and non-nodular enhancements in terms of the rate of malignancy ( p = 0.725).
Conclusion: In our sample, the overall malignancy rate was 21%. However, to improve the assessment of these results, it is necessary to correlate them with the surgical data and with data from the follow-up of benign cases.
Databáze: MEDLINE
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