Oral malignant melanoma: History of malignant degeneration of a pigmented lesion Nour Mellouli, Samah Sioud, Maroua Garma, Abdellatif Chokri, Habib Hamdi and Jamil Selmi J Oral Med Oral Surg, 25 2 (2019) 19 Published online: 04 April 2019 DOI: 10.1051/mbcb/2019003