Two white sponge nevus in a single family: case report Chloé Pasquier, Sophie Tisné-Versailles, Mathilde Fénélon, Sylvain Catros and Jean-Christophe Fricain J Oral Med Oral Surg, 27 1 (2021) 5 Published online: 09 October 2020 DOI: 10.1051/mbcb/2020046