白色海绵痣(white sponge nevus,WSN)(OMIM,193900),又称Cannon白色海绵痣(white sponge nevus of Cannon)(OMIM,193900),遗传性黏膜白色角化症(leukokeratosis,hereditary mucosal)(OMIM,193900)。白色皱折性龈口炎或牙龈炎(white folded gingivostomatitis),先天性白色角化症(congenital leukokeratosis),家族性黏膜白色皱折发育异常(f ......