恶性黑色素瘤的确切病因尚不知道。引起黑色素瘤和黑痣恶变的特殊因素尚待阐明。但有一些偶然的特征表明有些因素可能是致病因子,或可能使病人成为发生恶性黑色素瘤的易感宿主。本文将讨论这些因 The exact cause of malignant melanoma is not yet known. The specific factors that cause malignant transformation of melanoma and melanoma remains to be elucidated. However, there are some occasional features that indicate that some factors may be causative factors, or may make the patient a susceptible host for the development of malignant melanoma. This article will discuss these reasons