\n\n
患过黑色素瘤的人很容易再患,有些人甚至会发生两处以上的黑色素瘤。患过一种或多种常见皮肤肿瘤(基底细胞癌或鳞癌)的人,发生黑色素瘤的危险也大大增加。
\n\n黑色素瘤可以呈家族性发病,若某人有两个,或两个以上的亲属患有该病,那么他患黑色素瘤的可能性就会大大增加。当家人患有黑色素瘤时,其他家庭成员应去医院行定期检查。
\n\n免疫力低下的人容易患黑色素瘤,如肿瘤、器官移植术后或艾滋病患者。
\n\n如果幼年时期皮肤曾被日光严重晒伤,甚至起水泡,那么患黑色素瘤的可能性就会增加。因此,建议父母要保护孩子不要受日光暴晒。成年后被晒伤同样也会增加黑色素瘤的患病风险。
\n\n专家们认为,黑色素瘤的发病率在全球范围内上升,与人们接触日光时间明显增加有关。例如,美国田纳西州的黑色素瘤患者比明尼苏达州多,因为那里的紫外线更强。太阳紫外线照射导致皮肤提前老化和损伤,进而可以引起黑色素瘤。像太阳灯和制革车间发出的人工紫外线,同样能损伤皮肤,增加黑色素瘤患病风险。所以,医生建议人们减少紫外线的接触,不管是天然的还是人工的。
\n\n中国人黑色素瘤多发生于肢端皮肤和黏膜,与紫外线暴露没有明确关系,反而与外伤、慢性炎症和用激光、电烤、冷冻、盐腌、切割、针挑、绳勒等不恰当的黑痣处理方法有关。不恰当的处理,会刺激黑色素瘤细胞恶变,或使处于皮肤浅层的黑色素瘤细胞,浸润到皮肤深层,从而进入淋巴管和血管,出现淋巴结转移或远处转移。一旦怀疑“痦子”可能恶变,一定去专科医院就诊后再予处理,千万不要盲目治疗。
\n\n\n\n(本文由北京大学肿瘤医院黑色素瘤与肾癌科提供)
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