Primary Renal Fibrosarcoma with Massive Tumor Size and Inferior Vena Cava Extension Mimicking Renal Cell Carcinoma: A Rare Case Report. Journal of Kidney Cancer, [S. l.], v. 13, n. 1, p. 6–11, 2026. DOI: 10.15586/jkcvhl.v13i1.430. Disponível em: https://mail.jkcvhl.com/index.php/jkcvhl/article/view/430. Acesso em: 17 apr. 2026.