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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Malignant melanoma恶性黑色素瘤
About one cancer in 100 is a malignant melanoma.约一癌症的100是一个恶性黑色素瘤。 Malignant melanoma is a tumour of melancytes, the cells that produce melanin.恶性黑色素瘤是一种肿瘤melancytes ，细胞产生的黑色素。 (the pigment that colours the skin ,hair and the iris of the eyes. Skin melanomas are very rare in childhood and occur most frequently in people who are middle-aged or older. （色素认为，颜色皮肤，毛发和虹膜的眼睛是雪亮的。皮肤黑色素瘤是非常罕见的在童年和发生最频繁的人谁是中年或老年人。
Malignant melanoma can also affect the choroid of the eye, the layer just under the retina.恶性黑色素瘤也可以影响脉络膜的眼睛，只是层下的视网膜。 This is the most common type of eye tumour.这是最常见的类型，眼肿瘤。 It causes no pain, but leads to detachment of the retina and an obvious visual defect.它不会引起疼痛，但导致支队的视网膜和一个明显的视觉缺陷。
They are becoming more common, probably because of the increasing number of people from temperate climates exposed to strong sunlight.他们已越来越常见，可能是因为越来越多的人从温带气候暴露于强烈的阳光。 Malignant melanoma has doubled every ten years for the past 40 years.恶性黑色素瘤已增加一倍，每10年为过去40年。 This is almost certainly because holidays in sunny climates have become more widely available and sunbathing has become more popular.这几乎可以肯定是因为假期，在阳光普照的气候，已成为更广泛地提供和日光浴，已成为更受欢迎。
About half of malignant skin melanomas arise from pre-existing moles.约一半的恶性皮肤黑色素瘤的出现，从先前存在的痣。 Nearly everyone has pigmented moles, but only one in a million becomes malignant.几乎每个人都有色素性痣，但只有一个在1万美元，成为恶性。
Hairy moles hardly ever turn into malignant melanomas.毛痣几乎变成恶性黑色素瘤。 Once you are suspicious of changes in a coloured skin mole, don't delay in reporting the condition for an expert opinion.一旦您是可疑的变化，在一个深色皮肤的摩尔，不要拖延，在报告的条件，一专家的意见。 The outlook in any case of malignant melanoma depends on the thickness (depth) of the tumour, so early detection and treatment is critical.前景在任何情况下恶性黑色素瘤，就看厚度（深度）的肿瘤，因此早期发现和治疗是至关重要的。
