Primary squamous cell carcinoma of the sigmoid colon. Indian Journal of Case Reports, [S. l.], v. 5, n. 5, p. 461–463, 2019. DOI: 10.32677/IJCR.2019.v05.i05.020. Disponível em: https://www.mansapublishers.com/ijcr/article/view/1819. Acesso em: 17 aug. 2026.