恶性黑色素瘤,世界各地的发病率低于1—2/10万,国内病理活检资料,本病占恶瘤的百分比,广东全省是0.6％,广西百色地区是0.58％。可见本病是很少见的。本病大部分由手足皮肤黑痣发生,且有15％是无色的。若发生在手足皮肤以外的部位,又是无色的,诊断就十分困难,只能作病理检查确诊。笔者于1977年10月在门 Malignant melanoma, the incidence rate in the world is lower than 1 - 2/10 million, the domestic pathological biopsy data, the disease accounted for the percentage of malignant tumors, Guangdong province is 0.6%, Guangxi Baise area is 0.58%. It can be seen that the disease is rare. Most of the disease is caused by black skin in hand and foot skin, and 15% is colorless. If it occurs in areas other than the skin of the hands and feet, and it is colorless, the diagnosis is very difficult and can only be confirmed by pathological examination. The author was at the door in October 1977