White sponge nevus of the tongue.

To my knowledge, this is the fifth case of white sponge nevus of the tongue to be reported. This lesion is probably much more common than has been reported in the past. The disorder is benign and almost always asymptomatic. The recognition of this disorder is important in that it must be differentiated from other congenital or familial disorders of more widespread clinical significance. It is important for any physician, and especially for dermatologists, to do a thorough examination of the oral mucous membranes as a part of any physical examination.