Role of magnetic resonance imaging in the planning of breast cancer treatment strategies: comparison with conventional imaging techniques.

Autor: França LKL; MD, Resident in Radiology and Diagnostic Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Bitencourt AGV; PhD, Attending Physician, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Paiva HLS; MD, Resident in Radiology and Diagnostic Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Silva CB; MD, Resident in Radiology and Diagnostic Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Pereira NP; MD, Resident in Radiology and Diagnostic Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Paludo J; MD, Resident in Radiology and Diagnostic Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Graziano L; MD, Attending Physician, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Guatelli CS; MD, Attending Physician, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., de Souza JA; MD, Attending Physician, Imaging Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil., Marques EF; MD, Head of the Department of Breast Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
Jazyk: angličtina
Zdroj: Radiologia brasileira [Radiol Bras] 2017 Mar-Apr; Vol. 50 (2), pp. 76-81.
DOI: 10.1590/0100-3984.2015.0124
Abstrakt: Objective: To assess the role of magnetic resonance imaging (MRI) in the planning of breast cancer treatment strategies.
Materials and Methods: The study included 160 women diagnosed with breast cancer, who underwent breast MRI for preoperative staging. Using Pearson's correlation coefficient ( r ), we compared the size of the primary tumor, as determined by MRI, by conventional imaging (mammography and ultrasound), and in the pathological examination (gold standard). The identification of lesions not identified in previous examinations was also evaluated, as was its influence on treatment planning.
Results: The mean age of the patients was 52.2 years (range, 30-81 years), and the most common histological type was invasive ductal carcinoma (in 60.6% of the patients). In terms of the tumor size determined, MRI correlated better with the pathological examination than did mammography ( r = 0.872 vs. 0.710) or ultrasound ( r = 0.836 vs. 0.704). MRI identified additional lesions in 53 patients (33.1%), including malignant lesions in 20 (12.5%), which led to change in the therapeutic planning in 23 patients (14.4%).
Conclusion: Breast MRI proved to be more accurate than conventional imaging in determining the dimensions of the main tumor and was able to identify lesions not identified by other methods evaluated, which altered the therapeutic planning in a significant proportion of cases.
Databáze: MEDLINE
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