RAMASAMY, V.; LAKSHMANAN, A.; RAMAN, S. G.; DEVIGOUNDER, K. Primary malignant melanoma of the duodenum: a rare case report. International Surgery Journal, [S. l.], v. 5, n. 11, p. 3771–3774, 2018. DOI: 10.18203/2349-2902.isj20184663. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/3382. Acesso em: 13 oct. 2025.