Jejunal adenocarcinoma in a young patient: A rare and late-diagnosed cancer. Case report. Actas Médicas (Ecuador), [S. l.], v. 36, n. 1, p. 139–148, 2026. DOI: 10.61284/301. Disponível em: https://actasmedicas.ec/index.php/am/article/view/301.. Acesso em: 24 jun. 2026.