Development and elimination of pigmented moles, and the anatomical distribution of primary malignant melanoma
Development and elimination of pigmented moles, and the anatomical distribution of primary malignant melanoma
复制标题
色素痣的发生和消除，以及原发性恶性黑色素瘤的解剖分布
作者：
E. Nicholls
在澳大利亚悉尼，男性每人的色素痣数量会增加到15岁，女性会增加到20 - 29岁，身体暴露最多的部位最快达到峰值。然后开始下降，以至于80岁的人几乎没有痣。在身体的每一个部位，在达到峰值后不久，色素脱失的斑点和带有明确或微弱光晕的痣更为常见。身体受阳光保护的部位上痣的延迟发展可能与以下事实有关：在欧洲人群中，恶性黑色素瘤的频率随着赤道的接近而增加，但许多额外的黑色素瘤发现于最少暴露于阳光的解剖部位。
In Sydney, Australia, the number of pigmented moles per person increases to age 15 in males and 20‐29 in females, the most exposed parts of the body reaching peak values soonest. A decline then begins so that moles are almost absent in persons 80 years old. On each part of the body, depigmented spots and nevi with definite or faint halos are more common soon after the peak values have been reached. The delayed development of moles on sunlight‐protected parts of the body may be related to the fact that in European pop ulations the frequency of malignant melanoma increases as the Equator is approached but many of the additional melanomas are found in anatomical sites minimally exposed to sunlight.