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【单选题】
恶性黑色素瘤，以下哪项说法，不正确A.
黑色素瘤多数是在色素病变基础上发生的
B.
正常皮肤也可以发生黑色素瘤
C.
黑色素瘤主要经血液转移至肺、骨等器官
D.
最佳治疗方案是外科手术切除
E.
黑色素瘤可以有家族史
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