Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
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| | N | | n | | | O | | o | | | P | | p | | | Q | |常见问题 | | | R | | 研究 | | | S | | | | | T | | 吨 | | | U | | u | | | V | | v | | | W | | 瓦特 | | | X | | x | | | Y | | y | |
Causes of Malignant melanoma原因恶性黑色素瘤
Melanomas are most common on areas exposed to the sun, but may occur anywhere on the skin.黑色素瘤是最常见的地方，暴露于太阳，但也可能发生在任何地方对皮肤。 There is a definite link between sunbathing and the incidence of malignant melanomas.有一个明确的之间的联系和日光浴的发病率恶性黑色素瘤。 Probably the most dangerous type of sunbathing is a short, sharp period of intense exposure, either in a single day or over a short period such as a holiday.大概是最危险的类型的日光浴是一个短期的，尖锐的时期，激烈的接触，无论是在单日或以上的在短期内如一个假期。 The larger the area of skin exposed, the greater the risk.较大面积的皮肤暴露出来，危险就越大。 Sunburn increases the risk.晒伤的风险增大。 It is the ultraviolet (UV) part of sunlight that does the most damage.它是紫外线（ UV ）的一部分阳光，这是最损坏。
Severe sunburn in childhood can significantly increase the chances of developing malignant melanoma in later life.严重晒伤在童年可显着提高的机会，发展中国家的恶性黑色素瘤在以后的生活。
There also be a hereditary influence on the development of malignant melanomas, and where excessive exposure to the sun is not a possible cause, family history is suspected.也有一个遗传的影响，对发展的恶性黑色素瘤，并在过度暴露于太阳是不是一个可能的原因，家族病史，是怀疑。
The presence of a large number of non-cancerous (benign) birthmarks amy also be a risk factor.在场的大批非癌（良性） birthmarks艾米也将是一个风险因素。
