COLON AND RECTAL CANCER: CHARACTERISTICS AND TREATMENT SURGICAL IN PATIENTS UNDER 50 YEARS. Actas Médicas (Ecuador), [S. l.], v. 31, n. 2, p. 84–89, 2021. DOI: 10.61284/124. Disponível em: https://actasmedicas.ec/index.php/am/article/view/124.. Acesso em: 25 may. 2026.