Resumo

RAMAEMA, Dibuseng P.  e  HIFT, Richard J.. Differentiation of breast tuberculosis and breast cancer using diffusion-weighted, T2-weighted and dynamic contrast-enhanced magnetic resonance imaging. S. Afr. J. radiol. (Online) [online]. 2018, vol.22, n.2, pp.1-7. ISSN 2078-6778.  http://dx.doi.org/10.4102/sajr.v22i2.1377.

BACKGROUND: The use of multi-parametric magnetic resonance imaging (MRI) in the evaluation of breast tuberculosis (BTB). OBJECTIVES: To evaluate the value of diffusion-weighted imaging (DWI), T2-weighted (T2W) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in differentiating breast cancer (BCA) from BTB. METHOD: We retrospectively studied images of 17 patients with BCA who had undergone pre-operative MRI and 6 patients with pathologically proven BTB who underwent DCE-MRI during January 2014 to January 2015. RESULTS: All patients were female, with the age range of BTB patients being 23-43 years and the BCA patients being 31-74 years. Breast cancer patients had a statistically significant lower mean apparent diffusion coefficient (ADC) value (1072.10 ± 365.14), compared to the BTB group (1690.77 ± 624.05, p = 0.006). The mean T2-weighted signal intensity (T2SI) was lower for the BCA group (521.56 ± 233.73) than the BTB group (787.74 ± 196.04, p = 0.020). An ADC mean cut-off value of 1558.79 yielded 66% sensitivity and 94% specificity, whilst the T2SI cut-off value of 790.20 yielded 83% sensitivity and 83% specificity for differentiating between BTB and BCA. The homogeneous internal enhancement for focal mass was seen in BCA patients only. CONCLUSION: Multi-parametric MRI incorporating the DWI, T2W and DCE-MRI may be a useful tool to differentiate BCA from BTB.

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