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恶性黑色素瘤(以下简称恶黑)的组织形态和临床表现复杂多样,而转移性恶黑有时又难以找到原发灶,因而增加了诊断的难度.为提高
Malignant melanoma (hereinafter referred to as evil black) has complicated and diverse histological forms and clinical manifestations, while metastatic serotype is difficult to find primary lesions at times, thus increasing the difficulty of diagnosis.