Rocha, M.K. da S., Oliveira, N.S. de, Mattos, R.R., Paes, B.C., Gomes, I.R.G., Farias, L.C., Barbosa, A.C.F., Carvalho, C.V., Sousa Cavalcante, J. and Portela, F.V.M. 2026. Extended-Spectrum β-Lactamase-Producing Escherichia coli Refractory to Nitrofurantoin and Fosfomycin Treatment: A Case Report Associated with Nephrolithiasis. Brazilian Journal of Case Reports. 6, 1 (Oct. 2026), bjcr232. DOI:https://doi.org/10.52600/2763-583X.bjcr.2026.6.1.bjcr232.