The oral mucosa is frequently affected and these ... the normal papules are replaced by flat violaceous macules that are found in the axillae and glans penis. Etiology: Lichen planus is a common ...

Pigmented nevi as well as mucosal and labial melanotic macules are lesions that simulate oral mucosal melanomas but are not associated with such a poor prognosis. In contrast, the 5-year survival ...