RISSI, Daniel R. Spontaneous anal expulsion of an osteosarcoma in a cat. Brazilian Journal of Veterinary Pathology, [S. l.], v. 17, n. 1, p. 58–59, 2424. DOI: 10.24070/bjvp.1983-0246.v17i1p58-59. Disponível em: https://bjvp.org.br/bjvp/article/view/444. Acesso em: 19 oct. 2025.