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Primary melanoma arising on the mucosal surface of the oral cavity, the vulvovaginal and the rectal areas is more common in pigmented races than in Whites. It is characterized by extensive irregular macular pigmentation. Prognosis tends to be poorer than in cutaneous melanomas, as mucosal melanomas are usually detected in a later stage of disease.
Mucosal Melanoma, Melanoma, Mucosal