口腔部位的原发恶性黑色素瘤非常罕见,占所有报告过的恶性黑色素瘤的0.4—1.3%。根据Chaudhry等的报告,口腔黑色素瘤好发于男性,男性发病约为女性的两倍。而皮肤恶性黑色素瘤男女性罹患率一样。口腔黑色素瘤的最好发部位是腭部及牙龈。发病年龄平均为50.5岁,30岁以上者约占90%。 The primary malignant melanoma in the oral cavity is very rare and accounts for 0.4-1.3% of all reported malignant melanomas. According to Chaudhry et al., oral melanoma occurs predominantly in men and is approximately twice as common in men. The incidence of male and female cutaneous malignant melanoma is the same. The best site for oral melanoma is the ankle and gums. The average age of onset was 50.5 years old, and accounted for about 90% of people over the age of 30.