Abstract
Oral melanoma (OM) occurs from activated or genetically altered epidermal melanocytes. There is no scientific evidence that OM can be linked to physical, chemical and thermal irritation, or to other risk factors of the oral cavity. According to fi gures from various countries, OM accounts for 0.2% to 7.5% ( Japan) of all cases of melanoma of the skin and mucous membrane. The male to female ratio of OM is 2:1. About 80% of OMs are located in the mucosa of the palate and maxillary gingiva. This paper presents two cases of oral mucosal melanoma of the upper and lower lips in women aged 62 and 59 years. Diagnosis, differential diagnosis and therapy are reported.
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