Ferreira, C. R., Fonseca, L. G. da, Piotto, G. H. M., Geyer, F. C., & Alcântara, P. S. M. de. (2013). Fibrosarcoma: a challenging diagnosis. Autopsy and Case Reports, 3(3), 21-29. https://doi.org/10.4322/acr.%y.75884